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NodejsProjects

  • Url Shortner

  • Todo App

  • Blog App

  • CLI

  • Chat App

  • API Proxy

  • PostBox

  • Shareongo

  • Meet&Greet

  • Password Protected sharing

  • Init Project -> Top Level Code -> Require Modules -> Event Callback Register -> CPU Task Offload to thread pool (4-128) -> Event Loop -> Expired Timer -> IO Pooling -> Set Immediate Callback ->Close callback ->exit

The Node.js event loop is a crucial aspect that enables non-blocking I/O operations despite JavaScript being single-threaded

  1. Timers Phase: Executes callbacks scheduled by setTimeout() and setInterval().
  2. Pending Callbacks Phase: Executes I/O callbacks deferred to the next loop iteration.
  3. Idle, Prepare Phase: Internally used phases.
  4. Poll Phase: Retrieves new I/O events and executes I/O-related callbacks, blocking when necessary. It can transition to the next phase if certain conditions are met.
  5. Check Phase: Executes setImmediate() callbacks immediately after the poll phase, if scheduled.
  6. Close Callbacks Phase: Handles close callbacks, such as 'close' events for sockets.