Lesson 02 concurrent server#2
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- Add TCP server that listens on port 4000 and handles single HTTP request - Implement core TCP lifecycle: listen, accept, receive, send, close - Add detailed comments explaining :gen_tcp options and flow - Update Elixir version requirement to 1.14 for compatibility This is the first step in learning Elixir by building an HTTP server from scratch. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
Lesson 02: Concurrent TCP Server New Features: - Add accept_loop with tail recursion for infinite accept loop - Spawn isolated process for each client connection - Enable concurrent handling of multiple requests - Add comprehensive LEARNING.md documentation Key Concepts Demonstrated: - Elixir process spawning with spawn/1 - Tail call optimization (TCO) for infinite recursion - Process isolation (crashes don't affect other clients) - Concurrency pattern: accept → spawn → recurse immediately Technical Details: - Each client handled in separate process (~2KB memory) - accept_loop never waits for spawned processes - Processes exit naturally when request completes - Can handle thousands of concurrent connections Documentation: - Complete explanation of TCP, sockets, and HTTP - Detailed breakdown of recursion vs tail recursion - Step-by-step code walkthrough with timeline diagrams - Testing guide including Observer visualization - Comparison of Elixir processes vs OS threads 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
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