OTP Design Principles

User's Guide

Version 12.1

• User's Guide
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Chapters

• Overview
  • Top of chapter
  • Supervision Trees
  • Behaviours
  • Applications
  • Releases
  • Release Handling
• gen_server Behaviour
  • Top of chapter
  • Client-Server Principles
  • Example
  • Starting a Gen_Server
  • Synchronous Requests - Call
  • Asynchronous Requests - Cast
  • Stopping
  • Handling Other Messages
• gen_statem Behaviour
  • Top of chapter
  • Event-Driven State Machines
  • When to use gen_statem
  • Callback Module
  • Callback Modes
  • State Callback
  • Transition Actions
  • Event Types and Event Content
  • State Enter Calls
  • Time-Outs
  • Example
  • Starting gen_statem
  • Handling Events
  • State Time-Outs
  • All State Events
  • One State Callback
  • Stopping
  • Event Time-Outs
  • Generic Time-Outs
  • Erlang Timers
  • Postponing Events
  • State Enter Actions
  • Inserted Events
  • Example Revisited
  • Filter the State
  • Complex State
  • Hibernation
• gen_event Behaviour
  • Top of chapter
  • Event Handling Principles
  • Example
  • Starting an Event Manager
  • Adding an Event Handler
  • Notifying about Events
  • Deleting an Event Handler
  • Stopping
  • Handling Other Messages
• Supervisor Behaviour
  • Top of chapter
  • Supervision Principles
  • Example
  • Supervisor Flags
  • Restart Strategy
  • Maximum Restart Intensity
  • Automatic Shutdown
  • Child Specification
  • Starting a Supervisor
  • Adding a Child Process
  • Stopping a Child Process
  • Simplified one_for_one Supervisors
  • Stopping
• sys and proc_lib
  • Top of chapter
  • Simple Debugging
  • Special Processes
  • User-Defined Behaviours
• Applications
  • Top of chapter
  • Application Concept
  • Application Callback Module
  • Application Resource File
  • Directory Structure
  • Application Controller
  • Loading and Unloading Applications
  • Starting and Stopping Applications
  • Configuring an Application
  • Application Start Types
• Included Applications
  • Top of chapter
  • Introduction
  • Specifying Included Applications
  • Synchronizing Processes during Startup
• Distributed Applications
  • Top of chapter
  • Introduction
  • Specifying Distributed Applications
  • Starting and Stopping Distributed Applications
  • Failover
  • Takeover
• Releases
  • Top of chapter
  • Release Concept
  • Release Resource File
  • Generating Boot Scripts
  • Creating a Release Package
  • Directory Structure
• Release Handling
  • Top of chapter
  • Release Handling Principles
  • Requirements
  • Distributed Systems
  • Release Handling Instructions
  • Application Upgrade File
  • Release Upgrade File
  • Installing a Release
  • Updating Application Specifications
• Appup Cookbook
  • Top of chapter
  • Changing a Functional Module
  • Changing a Residence Module
  • Changing a Callback Module
  • Changing Internal State
  • Module Dependencies
  • Changing Code for a Special Process
  • Changing a Supervisor
  • Adding or Deleting a Module
  • Starting or Terminating a Process
  • Adding or Removing an Application
  • Restarting an Application
  • Changing an Application Specification
  • Changing Application Configuration
  • Changing Included Applications
  • Changing Non-Erlang Code
  • Emulator Restart and Upgrade
  • Emulator Upgrade From Pre OTP R15