Author Archives: IMRAN ABDUL GHANI


Imran Abdul Ghani is working as Software Developer(Senior) with extensive knowledge in Web development technologies especially C#, ASP.NET, MVC, WCF, Web API, ADO.NET Entity Framework, jQuery etc. He has several years of experience in designing/developing enterprise level applications. He is Microsoft Certified Solution Developer for .NET (MCSD.NET) since 2005. You can reach his blogging at,, and

How to download Tik Tok videos in 2021?

With over 689 million users worldwide, Tik Tok has become one of the most popular apps among the younger age group. According to Hootsuite, Tik Tok is the seventh most popular app in the world. It stands behind Facebook, YouTube, WhatsApp, Facebook Messenger, Instagram, and WeChat.

There is no wonder why Tik Tok is popular among the younger audience. It gives more opportunities for making viral content. These trends have overflowed to other platforms, such as Instagram.

Due to internet connectivity issues or other problems, users may want to watch videos offline. For this, there are various downloader applications and platforms that let you download videos. However, most of these are not free and will cost you. If you want to download Tik Tok videos, there is an easy way to do that. Savefrom is a website that allows you to download videos without having to download an app.

What is is a video, audio, and photo downloader that lets users download content from various websites and social media platforms. These include Facebook, YouTube, Dailymotion, Vimeo, Soundcloud, and others. It also functions as an Instagram downloader. Savefrom is easy to use and is free for users. All you have to do is enter the URL of the video, image, or audio that you want to download. It will save the file on your device.

The Savefrom Tik Tok Video Downloader lets you download videos on your system. You don’t have to download any additional applications on your PC. It is also compatible with various devices, including PC and Android phones. Also, there will be no watermark on the video or MP3 audio file. With Savefrom, you can get high-quality video, audio, and images.

The following section provides information on how to download videos from Savefrom.

Downloading Tik Tok Videos on PC

The process is simple and straightforward for downloading Tik Tok videos on a PC. Open the website and enter the URL of the Tik Tok video that you want to download. You can also install the Savefrom extension on the web browser to download videos quickly. You can also check out steps to a successful online marketing campaign.

There is another way to download videos from the URL bar. All you need to do is add “” or “” to the beginning of the URL of the video. Press the enter button, and the video will be saved automatically to your PC. When downloading the video, Savefrom selects the default video quality.

Downloading Tik Tok Videos on Android phone

All you need to do is download the app on your phone and enter the URL of the file that you want to download. The file will be available in the phone gallery.

In addition to Android phones, you can download videos on Android tablets as well. Hence, you can watch videos and listen to audio on the go. With the app, you can also easily share videos with friends. You might also be interested in how social media impacts our lives.


Savefrom is one of the best platforms for downloading videos online. However, when using such a platform for downloading videos, a person does not get the right to share videos on a mass scale.

Why was Abra application Built on the Litecoin Platform?

Presently, Abra seeks to use the Litecoin platform majorly for almost its transactions. According to the development team of Abra, Litecoin was chosen after an intensive and thorough research was carried out. The purpose of the research according to the team was to find a suitable platform that meets their criterias.LiteCoin Crypto

Litecoin being a fast, scalable, secure, off-chain, on-chain and low transaction and mining fee platform was chosen. Another reason why Litecoin was chosen was because of its strict adherence to the Bitcoin’s core published roadmap. Also, the Litecoin platform is free of network outages, hard fork drama and outrageous transaction fees.

The Abra development team knows that the Bitcoin is more secure than Litecoin. This means that the Litecoin will offer lower mining fees and scaling for users. Also, Litecoin was chosen because it offers lower transaction fees and the recent Litecoin update offers even lesser fees. Each transaction on the Litecoin platform is charged at as low as 1 cent.

What it Means for Litecoin:

Abra and Litecoin

Attribution: Image taken from

Abra was primarily designed to solve all the complexities involved in investing in different cryptocurrencies simultaneously. For users in the US, before they can begin using Litecoin, they have to first obtain Litecoin. This technically means that if more people in the US decide to use Abra, it will also mean an increase in the total number of Litecoin users. Also the use of Abra’s smart contracts will drastically limit the number of LTC tokens in circulation. The adoption of Litecoin by Abra also adds credibility to the Litecoin platform and it shows that Litecoin is one of the best cryptocurrency platforms out there.

How Can Abra App Wallets be Funded?

Wallets on the Abra application can be funded either through direct bank wires or transfers or through the purchase of Bitcoins. Users who decide to fund through the purchase of Bitcoins will be required to input only their phone numbers.

Users can fund using a Philippines or an American account. Express cards, Litecoin, Bitcoin, and Ethereum can also be used to fund the Abra application. Once your funds are confirmed by the Abra application, you can immediately begin investing in over 20 cryptocurrencies and 50 fiat currencies.

How You Can Use Abra?

For first timers, you have to download the Abra application from the apps official website. After downloading, you are expected to  write down the private keys. Since the Abra application is a non-custodial app, users can access their funds anytime they decide.


The team behind the development of Abra seeks to primarily create a stable platform that will encourage the storage of fiat currencies as well as cryptocurrencies.

At the onset, Litecoin CEO Charlie Lee promised users on the platform a huge surprise. This surprise must have at first looked confusing to the general public. The introduction of Abra is good cryptocurrency news both for the Litecoin platform and for the application itself.

The application also seeks to add more cryptocurrencies. Also, it is important to note that Abra does not allow users to own these currencies. They can only trade or transfer them. As earlier mentioned, the Abra will also help increase the total number of users of Litecoin.

The inherent benefits of the .net online tests

The best thing about ASP.NET is the sheer fact that it encompasses all the betterments of a Microsoft framework with the flexibility of working with it in any possible domain over any given frame of time. The basic approach has been the development and maintenance of rich sites and delivered it to corresponding clients. The applications, which can be crafted out of this technology, are leak proof and highly secure- the two most important things in the modern software industry. This is the sole reason why the individuals who have a good base on this platform are a rarity to find amongst many, who know it superficially.The inherent benefits of the .net online tests

Technical issues to withstand changes

The sheer number of people knowing this platform and the technology is a bane due to the unavailability of people who know it from the core. Therefore it is imperative from a recruiter stand point to ensure that the recruitment happens seamlessly and therefore the best person can be selected for the functional point of view. On most occasions, the recruitment process is a time consuming issue as it requires a lot of resource allocation as well as involvement from different people belonging to different domains. This therefore leads to selection flaws often, resulting in a deficit of knowledge base, the candidate comes with.

Requirement of conduction of the examinations

Herein starts the requirement of a dedicated online .net online test for the candidates coming in for interview in the company premises or remote locations. These tests are a necessity today owing to their own set of distinct requirement analysis and candidate exposure mapping. These may be custom made as per the requirements and therefore are suited for judging candidates coming in from different backgrounds for different nature of positions in the company associated. These tests also ensure complete insight into the candidate’s knowledge base, knowing him completely in and out before the next hiring step takes place.

Mapping of questionnaire to suit the necessity

The .net online test is mapped in accordance to the exact set of requirements the company requires from the candidates. These are therefore totally focused to obtain the aggregated score of the candidate who is scrutinized for each and every question which is included in the test concerned. Today, this is an absolute must due to the sheer volume of candidates it can handle at any given allocated time frame. This volume allocation is therefore a mandatory must to ensure that there are a lot of candidates to account for simultaneously to make up for the recruitment process in a tight time frame. This is again regulated as per the maximum number of people a company wants to recruit at any given interval of time as per the company parameters.

Knowledge base testing and related parameters

One of the most important parameter consistent with the online based tests is the sheer exposure validation of the candidate towards core system knowledge base. Therefore the basic competency of the candidate in terms of the chief job designation is the one which is paid the most leverage to in the tests. This achieves the best possible measure to ensure smooth operational recruitment as well as total exploitation of the candidate’s knowledge base to match the benchmarks set up by the company in terms of their own set of policies. These benchmarks are therefore set up in accordance to the new set of data coming in from the online tests and the next set of company policies are set accordingly to match the previous set of data.

Experts to help in domain case and question setting up

Experts to pertain to the specific domain in action are utilized in some occasions to mark the involvement of quality service in terms of online .net online test. These highly professional people are being utilized to ensure smooth functioning of the online test set up. Often these individuals are utilized to have a word with the company executives and to ensure the exact set of questions which best describes and denotes the business logic of the company in question. The questions are set up in accordance with the parameters which are pre-set to suit the exact nature of the candidate in question and also to ensure that the candidate knows the technology from depth and is completely industry focused in approach. The focused approach is often the rule setting as this makes and breaks a right candidate to be able to work in an organization which relies heavily on the employers.

Picking up the right candidate for the right kind of designation

ASP.NET is a great technology to work on. The involvement of the online based tests makes complete use of the raw knowledge base of all the candidates coming in for recruitment. The process also saves on invaluable time to ensure that maximum number of focused questions can be aimed at the candidates to judge their capacity of stress management and also test out their individual professional skill set. The reports which are henceforth obtained are then readily deported to the company executives, where they can further scrutinize the different parameters based on the marks obtained in the corresponding examination. These records can be furthermore used in the later stages to cater to the recruitment if future benchmarks for upcoming processes, neutralizing out the creases in the overall recruitment process to ultimately aim and recruit a candidate best suited for the concerned organization.

Benefits of Web Development

Web development has existed ever since the Internet has and it is one of the fastest expanding fields. A career in web development is one of the most promising as you can work easily in both professional office environments as well as a freelancer. The prospects of earning are also very high.

What do you need to Get Started?
Learning web development does not need much. All you need is a stable internet connection and a fairly decent computer. You do not need to invest much on your computer at all. In fact, you can save cost by getting cheaper devices. For example, you can get monitor with built in speakers, which you can find here, in order to save cost.

Similarly, you need to take some time out of your day in order to learn the ins and outs of web development.

The Many Paths that you can Take
This field is vast. You can take many paths and go many different ways. If you have a knack for programming or if you want to learn some of the simpler programming languages, then you can go for back end web development. You can look into JavaScript, Phython, HTMIL 5, CSS, PHP etc as your starting languages.
In fact, HTML is one of the most basic languages out there. Along with CSS, it forms the cornerstone for all web pages that you see on the internet.Benefits of Web Development

Alternatively, if you are skilled with design you can go into front end web development from a designer perspective. You will need to learn the languages that are used for formatting the webpage layouts. In this case, you will need to couple your web development skills with graphic designing skills. You can use software such as Adobe Photoshop to create attractive web design and themes.

What if you do not want to learn programming?
Many of us out there do not understand programming at all. It seems very intimidating, plus, one little mistake can ruin your entire website. What if you still want to create a website but do not want to deal with the technicalities?
Well in that case, you have many platforms like WordPress, Weebly, Blogger, etc to help you with that. These are very intuitive and require very little understanding of the very basics of programming. In fact, if you are using WordPress for creating your website, you don’t need to learn web development at all.

The most famous of these platforms is WordPress. There are countless plugins and many different themes that you can install to enhance your website. You can even spend some bucks on drag and drop page builders like Thrive Theme Builders to give you a highly user-friendly experience in web development.

The plugins are so vast and so specific that you can solve almost anything. For example, if you want to speed up your website you need to minify your Javascript and CSS. Now a non-programmer would not be able to tamper around with the back end programming. However, WordPress simplifies this with its countless plugins. You can install plugins like W3 Cache or Total Cache to do that for you. This is just one of many examples that makes your web development life simple.

Web development is not remotely what it was about a decade ago. It has come way too far and there are many new fields emerging and thriving every year. Depending on your level of skill and experience, you are bound to fit in somewhere.

Is a Data Scientist Really Needed or Is It Just a Buzzword?

Data has become the new corporate currency hence any candidate with the relevant skillsets will be rewarded with a highly lucrative career as a data scientist. These type of professionals are in high demand as most organizations are looking for people to work on massive amounts of structured and unstructured data to provide useful insights that will help in achieving certain business objectives. The data science sector needs people with skills in data analysis, data visualization, IT architecture and test management. Statistics indicate that jobs in data science are expected to grow by 11 percent by 2024 which clearly shows that a data scientist is not just a mere buzzword.Data Scientist

Why Become a Data Scientist?

A career in data science offers several opportunities for those who want to set themselves apart from the crowd. However, it is important to be aware of some global trends in order to become a successful data scientist. The roles of a data scientist are not restricted to one particular industry as other sectors such as manufacturing, logistics and financial services are some of the emerging markets that are trending. Most companies are hiring industry-specific data scientists, so ensure that you hone your skills in your preferred sector in order to standout from other candidates. For instance, in the financial services sector, a data security specialist is in great demand since this industry uses transaction data that is highly exposed to potential data breaches and fraud which are major concerns in the industry.

While most data science roles require a high level of academic training such as a PhD in statistics or mathematics, there are other data scientist roles that do not necessarily require this level of training. But it is important to develop relevant skillsets that will help you excel in the industry. This includes signing up for online classes as well as attending professional best data science courses and bootcamps. You can also boost your CV by considering a big-data certification which is also critical in terms of career development and growth. Data analysts are among the most sought after professionals in the data science industry because most businesses are looking to cleanse and manipulate their data in order to build reports that clearly show what their business is all about.

Skills in quantitative analysis are therefore necessary for big datasets analysis. With these skills, you will also be able to conduct experimental analysis as well as implement machine learning which often overlaps with data science. The demand for experience in data governance is significantly increasing as companies rush to comply with the General Data Protection Regulation (GDPR) that seeks to strengthen the rights of data protection for everyone within the EU. Companies wishing to work with a European country are also required to comply which means that the regulation has far-reaching effects. It is predicted that over 75,000 data protection officers will be needed worldwide as a result of this regulation.

Data science is certainly the next big thing in business intelligence (BI) which means that by extending your experience and proactively developing your skills in this field, you will be rewarded with a fulfilling and lucrative career with numerous opportunities to explore.

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Best Introduction to Cryptography

Introduction to cryptography

Cryptography is a term that is derived from the Greek words “kryptos” meaning “hidden” and “graphein” which means “to write”. In other words cryptography involves hidden words or the study of information hiding and verification that includes the use of algorithms, protocols and strategies to consistently and securely delay or prevent access to sensitive information by unauthorized persons while enabling verifiability of all components in a communication. Cryptography allows people to transmit or store sensitive information over insecure networks such as the internet in way that it cannot be read by an unauthorized person except its intended recipient. This article is an introduction to cryptography with all that you need to know.

Main Goals of Cryptography:

Cryptography is used by security professionals for various reasons but the three main goals of cryptography include:

  • Data confidentiality
  • Data integrity
  • Data authentication

Confidentiality or data privacy is the most important goal of cryptography hence the meaning of a message is encoded to conceal it. The sender uses a cryptographic key to encrypt the message and the recipient also uses the same or a different cryptographic key to decrypt or decode the message.

Data integrity involves ensuring that the message received is similar to the sent message I.e it has not been modified or altered in any way. A unique message digest is created using hashing from the sent message and using the same technique, the recipient creates a second digest from the received message for comparison with the original one. This technique prevents unintentional alteration of a message but a variation will help in the creation of digital signatures to prevent malicious alteration.

Data authentication involves verifying that data actually came from where it claims to come from which is accomplished with the help of digital certificates.

Cryptography has implementation in many fields including the latest blockchain technology, you can find a good reference on blockchain technology following blockchain online course here.

How Cryptographic Keys Work?

Cryptographic KeysA cryptographic key is the most important part of a cryptographic operation since it is used to transform cipher text into plain text or vise versa with the help of a cryptographic algorithm. A cryptographic key is private ensuring secure communication. The security of a well designed cryptographic scheme entirely depends on how secure the keys used are. Cryptographic keys can be asymmetric or symmetric where symmetric encryption only requires one key while asymmetric encryption requires two different keys (One for encryption and the other for decryption). Public or private key pairs are provided by a certificate authority (CA) that uses the public key infrastructure.

Cryptographic Algorithm:

A cryptographic algorithm or a cipher is simply the means used to alter data from plaintext (readable form) to ciphertext or a protected form and vise versa. Altering ciphertext into plaintext is referred to as encryption whereas altering ciphertext into plaintext is referred to as decryption.

Why Cryptography Is So Important?

Cryptography is extremely vital in IT security in order to achieve data integrity, data confidentiality, non-repudiation as well as user authenticity. Using cryptography, data is protected from unauthorized access or theft. It can be easy to forge an email but it is difficult to corrupt a digitally signed email. Sensitive information remains secret especially when it is sent over insecure networks like the internet. When sending data to someone, it is easy to ensure that only the recipient can be able to decrypt your message.

I have tried to cover maximum about the basics of cryptography and hopefully the reader will have good understanding of the basics that can be further flourished using more related cryptography tutorials.

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MicroServices Vs SOA

There has been a growing debate about the differences if any between Microservices and Service-Oriented Architectures (SOA). While both Microservices and SOA have more architectural similarities than differences, they are totally different from each other. These two architectures rely on services as their main component but in terms or service characteristics, they vary greatly. In order to distinguish between the two, it is important to first understand their architectural differences.Microservices Vs SOA

Microservices architecture is basically a particular way of developing mobile applications, web or software as independent suites of services known as microservices while SOA is a software architecture pattern allowing application components to offer services to other components over a network through a communications protocol.

Microservices Vs SOA

In Microservices architecture, there is very little or no coordination at all needed among services unlike SOA where coordination with multiple groups is required for creation of business requests. SOA facilitates component sharing while Microservices uses “bounded context” to minimize on sharing. A bounded component in this case means the coupling of a component as well as its data into a single unit that has minimal dependencies. Systems that are built on SOA are more likely to be slower than those built on Microservices since SOA solely depends on multiple services in order to fulfill a business request.

SOA has a messaging middleware that offers several additional capabilities that are not present in Microservices such as message enhancement, mediation and routing as well as message and protocol transformation. On the other hand, Microservices consists of an API layer that is between services and service consumers. The architectures of SOA depend on messaging (MSMQ, AMQP) as well as SOAP as the primary remote-access protocols while most Microservices architectures only rely on two protocols namely simple messaging (MSMQ, JMS) and REST. Microservices has a protocol that is usually homogeneous in nature. However, SOA promotes multiple heterogeneous protocols through the messaging middleware component.

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Microservices basically tries to simplify the architecture pattern through reduction of the choices for integration thus if you need to integrate many systems with different protocols in a heterogeneous environment, then SOA should be your choice. But if your services can be exposed and accessed via the same remote-access protocol, Microservices is a better choice. You can easily find many Online Certificate Courses on Microservices and SOA here. One of the most fundamental capabilities offered in SOA is contract decoupling which offers a high level of decoupling between consumers and services. Microservices on the other hand does not offer contract decoupling.

Nothing really new was introduced in Microservices architecture but it is basically a logical evolution of service-Oriented Architectures (SOA). For more complex and large business application environments that may need integration with several heterogeneous applications, SOA will be better suited. However, using SOA patterns to implement workflow-based applications with a well-defined processing flow may be a bit challenging. Equally, small applications may also not be well suited for SOA since they do not require messaging middleware component but the Microservices pattern is a perfect choice for well-partitioned and smaller web based systems. Microservices lacks messaging middleware, a factor that makes it unfit for large and more complex environments.

If you are looking to develop an application with greater control, then Microservices is a great option but as your business grows, you might need more capabilities like heterogeneous systems integration or complex request transformation where you may be required to switch to SOA pattern.

Your first guide to MEAN Stack Development

The fact that MEAN Stack uses JavaScript on all levels makes it extremely compelling which also makes it one of the most efficient and modern web development solutions. For those who are looking to explore more about web development, learning something about MEAN Stack development will be a good idea since it will be quite difficult to succeed in web development without a thorough knowledge of JavaScript. MEAN Stack generally runs on JavaScript allowing developers to access both client-side and server-side solutions for their applications.

What Is MEAN Stack?

This is basically a collection of web development technologies that are based on JavaScript such as ExpressJS, NodeJS, AngularJS and MongoDB that are stacked together providing developers with a more efficient and effective way to develop their MEAN based apps with the help of pre-configured modules such as Passport and Mongoose. The term “MEAN” is an acronym used in the coding world to refer to a full stack and user-friendly JavaScript-based framework that is used in developing dynamic websites and applications. It is typically an open-source form full stack that helps both growing and professional web developers to access a wide range of resources that they can use to create prototypes for their MEAN based applications.

Why MEAN Stack Is So Popular?

Several coding boot camps such as Hack Reactor as well as online course platforms are beginning to embrace JavaScript as their primary language of instruction. This makes a lot of sense because their is nothing much one can do on the web without it. Most people prefer JavaScript as opposed to Python, PHP and Ruby. Another reason why MEAN Stack development is so popular is the employability factor. Employers are consequently looking for skilled JavaScript talent due to a shortage of engineers who are specifically familiar with JavaScript web-based technologies which are the building blocks of MEAN Stack.

MEAN has become a powerful development stack in the coding world and a more effective solution than “LAMP” which is similar to MEAN. The simplicity offered by MEAN Stack is another reason why it is growing in popularity since developers can accurately and quickly develop their development times and can also be able to access both server-side and client-side environments in web development. MEAN Stack is also highly adaptable since its uses JavaScript as its primary language hence it can be used for various applications.

The Fastest Way To Learn MEAN Stack

Any developer who chooses to learn the MEAN Stack makes a great decision since it comes with several benefits and opportunities such as better employability. The ability to learn the MEAN Stack quickly will depend on your previous experience in web development but for your to learn it thoroughly you will need a solid foundation. You can enroll for an online MEAN Stack development course by and learn how to effectively build applications with MEAN Stack. These courses will help you become a professional JavaScript developer while increasing your skills on how all the components of MEAN Stack work together.

MEAN Stack Developer Vs Full Stack Developer

There is a fine line between the work of a MEAN Stack developer and that of a full stack developer. In fact, MEAN Stack developers are full stack developers but a full stack developer is not a MEAN Stack developer. Full stack developers can develop web applications and websites on the front-end while working with databases and servers on the back end. A Mean Stack developer on the other hand uses a different set of languages and technologies to build sites or applications.

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What Are Microservices And Why They Are Important?

At present, customers, suppliers and associated ecosystems are continuously expanding. This is directing organizations to seek improved methods to build stronger engagement with all, and enhance their input to the bottom line of the corporate world. Microservices quickly add new functionality, make changes to and maintain existing functions, and bring the products to the market in time. This way digital leaders meet the necessities of everybody associated with the business.What are Microservices?

What are Microservices?

Microservices are an engineering perspective and architectural way to compute what is becoming very important for the organizations. Microservices help the organizations to innovate via a robust engagement with a wide base of suppliers, customers, and partners – and it is a well-known fact that engagement leads to lasting relationships.

The main idea behind Microservices is to make the working and managing of certain applications easy by breaking down them into smaller and composable pieces that work together. Every component is consistently developed and individually maintained. The application henceforth is the sum of all the constituent components. In comparison to traditional, “monolithic” applications which were developed in a single piece, the concept of Microservices is completely different.

The Microservices applications are easy to understand, test, and maintain. This helps the organizations to attain higher agility and vastly enhance the time required to gain production related working improvements. This is a superior approach, especially for the large business applications developed by the teams of culturally and geographically diverse developers.

There are various other benefits of Microservices, such as:

  • Developer Independence: Smaller teams work side by side and can recapitulate faster than the larger teams.
  • Resilience and isolation: When some component dies, the application still continues to function until another one is drawn up.
  • Scalability: The smaller components utilize fewer resources and these resources can be extended to meet the rising demand for that component.
  • Lifecycle automation: Single components can easily fit into steady delivery pipelines; complicated deployment scenarios are not feasible with monoliths.
  • Relationship with Business: The architecture of Microservices splits along the boundaries of the business domain and it increases the understanding and independence across the business.

An important implementation about building ASP.NET Core 2.0 e-commerce web site based on microservices can be a good start to practically learn microservices.

Why are Microservices Important?

Microservices are important to businesses and most of the experts believe that investment in microservices brings fruitful results. With Microservices, an architecture is created which can easily be changed in changing environments. Agile development means embracing the unavoidable change, this architecture easily does so.

Within an architecture of Microservices, every functional component is monitored by the respective application. The individual components are auto-scaled to meet the increased demand. After the completion of an event, it detects the decrease in requirements and cuts back accordingly.

In a time when customers expect seamless and uninterrupted digital experiences, Microservices are a huge breakthrough for everyone offering digital services and products. Microservices work in alignment with the small teams that are multi-functional and provide their services in the production. This gives greater responsibility, ownership and henceforth superior value for money. The advantages of Microservices make them an eminent part of an organization’s plans.

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What Everyone Ought to Know about Big Data & Hadoop

Data is a critical aspect of every business or organization. In fact, it is capable of influencing an organization’s plan of action and can also be utilized for the success and growth of a project. This article is an introduction to Big Data & Hadoop and includes all the basics that you need to know.

What is Big Data?

Big Data and Hadoop 2Big Data is basically a term used to describe a large volume of complex, diverse and fast-changing data which is acquired from new data sources as well as the analysis of it. The complexity and diversity of these data sets makes it extremely difficult to store and manage it efficiently with traditional data processing and management tools. Big Data is classified into two main types, namely structured data and unstructured data. SQL databases are examples of structured data while document files as well as data from search engine results are examples of unstructured data or data whose form is unknown. As organizations strive to make their mark in a highly competitive market, there is need for more effective ways to manage data which involves handling huge amounts of data which is no mean task. It is therefore important to incorporate Big Data development strategies that are capable of transforming your business.

You can follow here for Best Online Data Science Courses and MOOCs.

Characteristics of Big Data

Followings are the key characteristics of Big Data:

1. Volume

The term Big Data describes data which is enormous in size. The value of data largely depends upon its size. Volume is a major characteristic that determines whether data is big or not.

2. Variety

This refers to the heterogeneous nature of data whether structured or unstructured. In the past, most applications considered databases and spreadsheets as the only sources of data, but today, data is available in many forms such as photos, emails, videos, audio, PDFs, monitoring devices among others. However, this variety also poses a few challenges that include storage, mining as well as analysis.

3. Velocity

This term generally refers to how fast data is generated or the speed of data generation and processing to meet the demands which also determines the potential in that data. The velocity of Big Data involves the speed at which data from sources such as business processes, mobile devices, social media sites, application logs and sensors flows in. This flow of data is not only massive in nature but is also continuous.

4. Variability

This is the inconsistency which data can show at times, thus affecting the effective management and handling of data.

Importance of Big Data Development

A business or organization’s ability to process and develop Big Data comes with several benefits that include:

  • Improved customer service
  • Early identification of business risks if any
  • Ability of a business to utilize outside intelligence in decision making
  • Better operational efficiency

Companies can access data from search engines and other social sources of data such as Facebook and Twitter to fine tune their business strategies. Customer feedback has also been improved thanks to new systems that have adopted Big Data technologies. These technologies can greatly improve the efficiency of a business.

Risk Associated with Big Data

Some of the biggest risks of big data include:

  • Lack of privacy
  • Cyber security threats
  • Over relying on data which can be risky sometimes
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Big Data and Hadoop – Features and Ecosystem

Hadoop is simply a framework that uses a simple programming model to allow for the distributed processing of huge chunks of data sets across several commodity computers. This framework can effectively store and analyze data available in different machines quickly and in a cost effective way. Hadoop uses the MapReduce concept that allows it to divide a query into small portions before processing them in parallel. Some key features of Hadoop include:

  • Flexibility in data processing
  • Scalability (new nodes can be added onto the platform on need basis)
  • Fault tolerance (Availability of data backup)
  • Extremely fast data processing
  • A robust ecosystem
  • Cost effective (Reduces the cost of storage)

The Hadoop ecosystem comes with great projects such as Hive, MapReduce, Apache Pig, HBase, HCatalog, Zookeeper among many other new tools that are designed for better data processing.

Hadoop Architecture and Building Blocks

Big Data and HadoopHadoop is composed of four main building blocks, namely Hadoop CommonHadoop Distributed File system, MapReduce and Yet Another Resource Negotiator (YARN). The Hadoop Distributed File System provides reliable data access and storage across the various nodes of a Hadoop cluster while the Hadoop Common supports other Hadoop modules. Yarn assigns storage, memory and CPU to all applications running on the Hadoop cluster. YARN is Hadoop’s core architectural center that enables multiple data processing engines like reel-time streaming and interactive SQL to handle data that is stored in a single platform.

Big Data Analytics

Many organizations are using Big Data analytics while making operational and strategic decisions. By examining Big Data sets, an organization can discover hidden patterns, customer preferences, market trends, unknown correlations and any other useful information that can help in designing more effective marketing campaigns as well as improved customer service.

This is an overview of Big Data and related concepts/technologies. More related articles with tons of information will be shared later.