DevOps Essentials

• Major Reason for practicing DevOps

  • Reducing Time To Market
  • Increasing Frequency of Releases
  • Reducing the Costs

• In an Organization

  • Developers write code
  • Tester the application
  • Operations Team who release the application to the customers

What do i need to Understand to become Effective at DevOps

• You should know
  • how to build the code
  • how to execute the automated tests
  • how to raise concerns when Quality is Comprimised
  • how to deploy the applications
  • how to make frequent releases
  • how to monitor everything

Servers Terminology

Web Server

• Webserer accepts http(s) requests from clients and responds back with Http(s) response with Html Pages/files/videos
• Webserver is a software that is installed on the Operating Systems (Linux/Windows/Mac/Rasberry PI)
• WebServers might fetch the information from other servers to build a response
• Popular WebServers
  • Apache
  • Nginx
  • Microsoft IIS (Internet Information Services)

Application Server

• Application servers are built to expose/execute business logic to the clients and which in turn generates the dynamic content.
• Is a software framework that provides functionality offered by a business, service or an application Eg: Add an user to the application/ Transfer amount from one account to other/ Get the insurance quote
• Application Servers are technology specific i.e.Java Application Servers, Python Application Server, .net Applications
• Popular Application Servers:
  • Java:
    • Tomcat
    • Weblogic
    • WebSphere
    • Jetty
  • JavaScript:
    • Nodejs
  • .net:
    • IIS
  • Python:
    • Django
    • Tornado
• Refer Here for popular application servers