Saad Shaikh

Data Science Dojo is offering LAMP and LEMP for FREE on Azure Marketplace packaged with pre-installed components for Linux Ubuntu. 

 

What are web stacks? 

 

A complete application development environment is created by solution stacks, which are collections of separate components. These multiple layers in a web solution stack communicate and connect with each other to form a comprehensive system for the developers to create websites with efficiency and flexibility. The compatibility and frequent use of these components together make them suitable for a stack. 

LAMP vs LEMP 

 

Now what do these two terms mean? Have a look at the table below: 

	LAMP	LEMP
1.	Stands for Linux, Apache, MySQL/MariaDB, PHP/Python/Perl	Stands for Linux, Nginx (Engine-X), MySQL/MariaDB, PHP/Python/Perl
2.	Supports Apache2 web server for processing requests over http	Supports Nginx web server to transfer data over http
3.	Can have heavy server configurations	Lightweight reverse proxy Nginx server
4.	World’s first open-source stack for web development	Variation of LAMP, relatively new technology
5.	Process driven design because of Apache	Event driven design because of Nginx

 

Pro Tip: Join our 6-months instructor-led Data Science Bootcamp to master data science skills 

 

 

Challenges faced by web developers 

 

Developers often faced the challenge of optimal integration during web app development. Interoperability and interdependency issues are often encountered during the development and production phase.  

Apart from that, the conventional web stack would cause problems sometimes due to the heavy architecture of the web server. Thus, organizational websites had to suffer downtime. 

In this scenario, programming a website and managing a database from a single machine, connected to a web server without any interdependency issues, was thought to be an ideal solution which the developers were looking forward to deploy. 

 

Working of LAMP and LEMP 

 

LAMP & LEMP are open-source web stacks packaged with Apache2/Nginx web server, MySQL database, and PHP object-oriented programming language, running together on top of a Linux machine. Both stacks are used for building high-performance web applications. All layers of LAMP and LEMP are optimally compatible with each other, thus both the stacks are excellent if you want to host, serve, and manage web content. 

 

 

The LEMP architecture has the representation like that of LAMP except replace Apache with Nginx web server. 

 

Major features 

 

• All the layers of LAMP and LEMP have potent connections with no interdependency issues 
• They are open-source web stacks. LAMP huge support because of the experienced LAMP community 

• Both provide blisteringly fast operability whether its querying, programming, or web server performance  
• Both stacks are flexible which means that any open-source tool can be switched out and used against the pre-existing layers 
• LEMP focuses on low memory usage and has a lightweight architecture 

 

What Data Science Dojo has for you 

 

LAMP & LEMP offers packaged by Data Science Dojo are open-source web stacks for creating efficient and flexible web applications with all respective components pre-configured without the burden of installation. 

• A Linux Ubuntu VM pre-installed with all LAMP/LEMP components 
• Database management system of MySQL for creating databases and handling web content 
• Apache2/Nginx web server whose job is to process requests and send data via HTTP over the internet 

• Support for PHP programming language which is used for fully functional web development 
• PhpMyAdmin which can be accessed at http://your_ip/phpmyadmin 
• Customizable, meaning users can replace each component with any other alternative open-end software 

 

Conclusion 

 

Both the above discussed stacks on the cloud guarantee high availability as data can be distributed across multiple data centers and availability zones on the go. In this way, Azure increases the fault tolerance of data stored in the stack application. The power of Azure ensures maximum performance and high throughput for the MySQL database by providing low latency for executing complex queries.

Since LEMP/LAMP is designed to create websites, the increase in web-related data can be adequately managed by scaling up. The flexibility, performance, and scalability provided by Azure virtual machine to LAMP/LEMP makes it possible to host, manage, and modify applications of all types despite any traffic. 

At Data Science Dojo, we deliver data science education, consulting, and technical services to increase the power of data. Don’t wait to install this offer by Data Science Dojo, your ideal companion in your journey to learn data science!  

Note: You’ll have to sign up to Azure, for free, if you do not have an existing account. 

 Data Science Dojo is offering Locust for FREE on Azure Marketplace packaged with pre-configured Python interpreter and Locust web server for load testing. 

 

Why and when do we perform testing? 

Testing is an evaluation and confirmation that a software application or product performs as intended. The purpose of testing is to determine whether the application satisfies business requirements and whether the product is market ready. Applications can be subjected to automated testing to see if they meet the demands. Scripted sequences are used in this method of software testing, and testing tools carry them out. 

The merits of automated testing are: 

• Bugs can be avoided 
• Development costs can be reduced 

• Performance can be improved till requirement 
• Application quality can be enhanced 
• Development time can be saved 

Testing is usually the last phase of the SDLC (Software Development Life Cycle)  

What is load testing and why choose Locust?  

Performance testing is one of several types of software testing. Load testing is an example of performance testing to evaluate performance under real-life load conditions. It involves the following stages: 

• Define crucial metrics and scenarios 
• Plan the test load model 
• Write test scenarios 

• Execute test by swarming load 
• Analyze the test results 

It is a modern load testing framework. The major reason senior testers prefer it over other tools like JMeter is because it uses an event-based approach for testing rather than thread based. This results in less consumption of resources and thus saves costs. 

Pro Tip: Join our 6-months instructor-led Data Science Bootcamp to master data science skills 

Challenges faced by QA teams  

Before such feasible testing tools, the job of testing teams was not much easier as it is now. Swarming a large number of users to direct as a load on a website was expensive and time-consuming.  

Apart from this, monitoring the testing process in real time was not prevalent either. Complete analytics were usually drawn after the whole testing process concludes, which again required patience. 

The testers needed a platform through which they can evaluate quality of product and its compliance with the specified requirements under different loads without the prolonged wait and high expense. 

Working of Locust 

Locust is an open-source web-based load testing tool. It is based on python and is used to evaluate the functionality and behavior of the web application. For the quality assurance process in any business, load testing is an extremely critical element to assure that the website remains up during traffic influx as it will eventually contribute to the success of the company. Through Locust, web testers can determine the potential of the website to withstand the number of concurrent users. With the power of python, you can develop a set of test scenarios and functions that imitate many users and can observe performance charts on web UI. 

 

 

The self.client.get function points to the pages of a website that you want to target. You can find this code file and further breakdown here. The host domain, users and the spawn rate for the load testing are supplied at the web interface. After running the locust command, the web server is started at 8089. 

 

 

It also allows you to capture different metrics during the testing process in real-time. 

 

 

Key characteristics of Locust 

 

• An interactive user-friendly web UI is started after executing the file through which you can perform load testing 
• Locust is an open-source load-testing tool. It is extremely useful for web app testers, QA teams and software testing managers 
• You can capture various metrics like response time, visualized in charts in real-time as the testing occurs 

• Achieve increased throughput and high availability by writing test codes in pre-configured python interpreter 
• You can easily scale up the number of users for extensive production level load testing of web applications 

 

What Data Science Dojo provides 

 

Locust instance packaged by Data Science Dojo comes with a pre-configured python interpreter to write test files, and a Locust web UI server to generate the desired amount of load at specific rates without the burden of installation.  

Features included in this offer:  

• VM configured with Locust application which can start a web server with rich UX/UI 
• Provides several interactive metrics graphs to visualize the testing results 
• Provides real-time monitoring support 

• Ability to download requests statistics, failures, exceptions, and test reports 
• Feature to swarm multiple users at the desired spawn rate 
• Support for python language to write complex workflows 
• Utilizes event-based approach to use fewer resources 

Through Locust, load testing has been easier than ever. It has saved time and cost for businesses as QA engineers and web testers can perform testing now with few clicks and few lines of easy code. 

 

 

Conclusion 

 

Locust can be used to test any web application. By swarming many clients spawning at a specific rate, the functionality of a website can be assured that it can manage concurrent users. To achieve extensive load testing, you can use multi-cores on Azure Virtual Machine. Also, the Its web interface calculates metrics for every test run and visualizes them as well. This might slow down the server if you have hundreds upon hundreds of active test units requesting multiple pages. The CPU and RAM usage may also be affected but through Azure Virtual Machine this problem is taken care of. 

At Data Science Dojo, we deliver data science education, consulting, and technical services to increase the power of data. We are adding a free Locust application dedicated specifically for testing operations on Azure Marketplace. Now hurry up install this offer by Data Science Dojo, your ideal companion in your journey to learn data science!  

 

Click on the button below to head over to the Azure Marketplace and deploy Locust for FREE by clicking on “Try now” 

 

Note: You will have to sign up to Azure, for free, if you do not have an existing account. 

Data Science Dojo is offering Metabase for FREE on Azure Marketplace packaged with web accessible Metabase: Open-Source server. 

 

Introduction 

Organizations often adopt strategies that enhance the productivity of their selling points. One strategy is to utilize the prior business data to identify key patterns regarding any product and then take decisions for it accordingly. However, the work is quite hectic, costly, and requires domain experts. Metabase has bridged that gap of skillset. Metabase provides marketing and business professionals with an easy-to-use query builder notebook to extract required data and simultaneously visualize it without any SQL coding, with just a few clicks. 

What is Metabase and its question? 

Metabase is an open-source business intelligence framework that provides a web interface to import data from diverse databases and then analyze and visualize it with few clicks. The methodology of Metabase is based on questions and the answers to them. They form the foundation of everything else that it provides. 

            

A question is any kind of query that you want to perform on a data. Once you are done with the specification of query functions in the notebook editor, you can visualize the query results. After that you can save this question as well for reusability and turn it into a data model for business specific purposes. 

Pro Tip: Join our 6-months instructor-led Data Science Bootcamp to become expert at data science & analytics skillset  

Challenges for businesses  

For businesses that lack expert analysts, engineers and substantial IT department, it was costly and time-consuming to hire new domain experts or managers themselves learn to code and then explore and visualize data. Apart from that, not many pre-existing applications provide diverse data source connections which was also a challenge. 

In this regard, a straightforward interactive tool that even newbies could adapt immediately and thus get the job done would be the most ideal solution. 

Data analytics with Metabase  

Metabase concept is based on questions which are basically queries and data models (special saved questions). It provides an easy-to-use notebook through which users can gather raw data, filter it, join tables, summarize information, and add other customizations without any need for SQL coding.

Users can select the dimensions of columns from tables and then create various visualizations and embed them in different sub-dashboards. Metabase is frequently utilized for pitching business proposals to executive decision-makers because the visualizations are very simple to achieve from raw data. 

 

 

 

Major characteristics 

• Metabase delivers a notebook that enables users to select data, join with other tables, filter, and other operations just by clicking on options instead of writing a SQL query 

• In case of complex queries, a user can also use an in-built optimized SQL editor 

• The choice to select from various data sources like PostgreSQL, MongoDB, Spark SQL, Druid, etc., makes Metabase flexible and adaptable 

• Under the Metabase admin dashboard, users can troubleshoot the logs regarding different tasks and jobs 

• Has the ability to enable public sharing. It enables admins to create publicly viewable links for Questions and Dashboards  

What Data Science Dojo has for you  

Metabase instance packaged by Data Science Dojo serves as an open-source easy-to-use web interface for data analytics without the burden of installation. It contains numerous pre-designed visualization categories waiting for data.

It has a query builder which is used to create questions (customized queries) with few clicks. In our service users can also use an in-browser SQL editor for performing complex queries. Any user who wants to identify the impact of their product from the raw business data can use this tool. 

Features included in this offer:  

• A rich web interface running Metabase: Open Source 
• A no-code query building notebook editor 
• In-browser optimized SQL editor for complex queries 
• Beautiful interactive visualizations 
• Ability to create data models 
• Email configuration and Slack support 
• Shareability feature 
• Easy specification for metrics and segments 
• Feature to download query results in CSV, XLSX and JSON format 

Our instance supports the following major databases: 

• Druid 
• PostgreSQL 
• MySQL 
• SQL Server 
• Amazon Redshift 
• Big Query 
• Snowflake 
• Google Analytics 
• H2 
• MongoDB 
• Presto 
• Spark SQL 
• SQLite 

Conclusion  

Metabase is a business intelligence software and beneficial for marketing and product managers. By making it possible to share analytics with various teams within an enterprise, Metabase makes it simple for developers to create reports and collaborate on projects. The responsiveness and processing speed are faster than the traditional desktop environment as it uses Microsoft cloud services. 

At Data Science Dojo, we deliver data science education, consulting, and technical services to increase the power of data. We are therefore adding a free Metabase server dedicated specifically for Data Analytics operations on Azure Market Place. Hurry up and install this offer by Data Science Dojo, your ideal companion in your journey to learn data science!  

Click on the button below to head over to the Azure Marketplace and deploy Metabase for FREE by clicking on “Get it now”. 

Note: You’ll have to sign up to Azure, for free, if you do not have an existing account. 

Data Science Dojo is offering Countly for FREE on Azure Marketplace packaged with web accessible Countly Server. 

Purpose of product analytics  

Product analytics is a comprehensive collection of mechanisms for evaluating the performance of digital ventures created by product teams and managers. 

Businesses often need to measure the metrics and impact of their products, for e.g., how the audience perceives their product like how many visitors are reading a particular page or clicking on a specific button. This gives an insight into what future decisions need to be taken regarding any product. Whether it should be modified? or removed? or kept as it is? Countly has made this work easier by providing a centralized web analytics environment to track the user engagement with a product along with monitoring its health.  

  

Pro Tip: Join our 6-months instructor-led Data Science Bootcamp to become expert at data science & analytics skillset  

Challenges for individuals  

Many platforms require developers for coding to visualize analytics which is not only time consuming but also come at a cost. At the application level, having an app crash leaves anyone in shock, and that is followed by a hectic task of determining the root cause of the problem which is time-consuming. At the corporate level, the current and past data needs to be analyzed appropriately for the future strength of the company and that requires robust analysis easily acquired by anyone which was a challenge faced by many organizations  

Countly analytics 

Countly enables users to monitor and analyze the performance of their applications irrespective of the platform in real-time. It can compile data from numerous sources and presents it in a manner that makes it easier for business analysts and managers to evaluate app usage and client behavior. It offers a customizable dashboard with the freedom to innovate and improve your products in order to meet important business and revenue objectives while also ensuring privacy by design. It is a world leader in product analytics because it tracks more than 1.5 billion unique identities on more than 16,000 applications and more than 2,000 servers worldwide. 

 

 

 

 

 

 

Major characteristics 

• Interactive web interface: User-friendly web environment with customizable dashboards for easy accessibility along with pre-designed metrics and visualizations 
• Platform-independent: Supports web analytics, mobile app analytics, and desktop application analytics for macOS and Windows 
• Alerts and email reporting: Ability to receive alerts based on the metric changes and provides custom email reporting 

• Users’ role and access manager: Provides global administrators the ability to manage users, groups, and their roles and permissions 
• Logs Management: Maintains server and audit logs on the web server regarding user actions on data 

What Data Science Dojo has for you  

Countly Server packaged by Data Science Dojo provides a web analytics service that provides insights about your product in real-time, no matter if it’s a web application or mobile app, or even desktop application without the burden of installation. It comes with numerous pre-configured metrics and visualization templates to import data and observe trends. It’s helpful for businesses to identify the application usage and determine the client response to the apps.  

Features included in this offer:  

• A VM configured with Countly Server: Community Edition accessible from a web browser 
• Ability to track user analytics, user loyalty, session analytics, technology, and geo insights  
• Easy-to-use customizable dashboard 
• Logs manager 
• Alerting and reporting feature 

• User permissions and roles manager 
• Built-in Countly DB viewer 
• Cache management 
• Flexibility to define data limits  

Conclusion  

Countly provides the feasibility to analyze data in real-time. It is highly extensible and possesses various features to manage different operations like alerting, reporting, logging, job management, etc. The analytics throughput can be increased by using multi-cores on Azure Virtual Machine. Also, Countly can handle different platform applications at once. This might slow down the server if you have thousands upon thousands of active client requests on different applications. The CPU and RAM usage may also be affected but through Azure Virtual Machine all these problems are taken care of. 

At Data Science Dojo, we deliver data science education, consulting, and technical services to increase the power of data. We are therefore adding a free Countly Server dedicated specifically for Data Analytics operations on Azure Market Place. Hurry up and install this offer by Data Science Dojo, your ideal companion in your journey to learn data science! 

Click on the button below to head over to the Azure Marketplace and deploy Countly for FREE by clicking on “Try now”. 

Note: You’ll have to sign up to Azure, for free, if you do not have an existing account. 

 

Data Science Dojo is offering RStudio for FREE on Azure Marketplace packaged with a pre-installed running version of R alongside other language backends to simplify Data Science. 

 

What is data science? 

 

Data Science is one of the quickest-growing areas of work in the industry. According to Harvard Business Review, it’s regarded as the “sexiest job of the 21st century”. 

Data science joins math and measurements, programming, refined analyses, machine learning and AI to reveal significant knowledge concealed in an association’s dataset. These understandings can be utilized to direct businesses in planning and decision making. The lifecycle of Data Science involves data collection (ingestion), data pre-processing and wrangling, predictive data analysis via machine learning and finally communication of outcomes for future strategies. 

 

Pro Tip: Join our 6-months instructor-led Data Science Bootcamp to master data science. 

 

Challenges faced by developers 

 

Individuals who were learning or pursuing Data Science and Machine Learning through R found it difficult to code and develop models using only a terminal or command line interface. Developers who wanted to perform extensive high powered ML operations but didn’t have enough computation power to do it locally was also another challenge.  

In these circumstances an interactive environment configured with R can help the users in gaining hands-on experience with machine learning, data analysis and other statistical operations. 

Working with RStudio 

 

RStudio is an open-source tool that gives you an effortless coding IDE in the cloud with a pre-installed R programming language to start your data mining and analytics work. It is integrated with a set of modules that make code development, scientific computing, and graphical jobs to be more productive and easier. This tool allows developers to perform a variety of technical tasks such as predictive modeling, clustering, multivariate querying, stock market rate, spam filtering, recommendation systems, malware, and anomaly detection, image recognition, and medical diagnosis. 

 

 

Key attributes 

 

• Provides an in-browser coding environment with syntax suggestions, autocomplete code feature and smart indentation 
• Provides the user with an easy-to-use free coding platform accessible at the local web server, powered by Azure machines 
• Apart from the primary built of R, RStudio has support for other famous interpreters as well such as Python, SQL, HTML, CSS, JS, C, Quarto and a few others 
• In-built debugging functionality by toggling breakpoints to detect and eradicate the issues or fix them quickly 
• As the computations are carried on Microsoft’s cloud servers, there is no memory or performance pressure on the company’s storage devices 
• In order to optimize the workload, the RAM and compute power can be scaled accordingly, thanks to Azure services 

 

What Data Science Dojo has for you 

 

The RStudio instance packaged by Data Science Dojo provides an in-browser coding environment with a running version of R pre-deployed in it, reducing the burden of installation. With an interactive user-friendly GUI-based application, developers can perform Machine Learning tasks with comfort and flexibility.  

• A browser based RStudio environment up and running with R pre-deployed 
• Convenient accessibility and navigation 
• Ability to work with different language scripts simultaneously 

• Rich graphics and interactive environment 
• Support for git and version control 
• Code consoles to run code interactively, with full support for rich output 
• Integrated R documentation and user help 
• Readily available cheat sheets to get started 

Our instance supports the following backends: 

• R 
• Python 
• HTML 
• CSS 

• JavaScript 
• Quarto 
• C 
• SQL 
• Shell 

• Markdown and Header files 

 

Conclusion 

 

RStudio provides customers with an easy-to-use environment to gain hands-on experience with Machine Learning and Data Science. The responsiveness and processing speed are much better than the traditional desktop environment as it uses Microsoft cloud services. It comes with built-in support for git and version control.

Several variants of the R script can be executed in RStudio. It allows users to work on a variety of language backends at the same time with smart observability of variables and values side by side. The documentation and user support are incorporated into the tool to make it easy for developers to code. 

At Data Science Dojo, we deliver data science education, consulting, and technical services to increase the power of data. We are therefore adding a free RStudio instance dedicated specifically to Machine Learning and Data Science on Azure Marketplace. Now hurry up and avail this offer by Data Science Dojo, your ideal companion in your journey to learn data science! 

 

Click on the button below to head over to the Azure Marketplace and deploy Rstudio for FREE by clicking on “Get it now”.    

Note: You’ll have to sign up to Azure, for free, if you do not have an existing account.