docs: Enhance CLAUDE.md with comprehensive architecture documentation #4
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- Fix session state process naming conflict causing test failures - Remove `name: __MODULE__` from Phoenix.SessionProcess.State.start_link/1 - Add test setup for proper isolation and cleanup - Improve test assertions with return value checking The issue was that Phoenix.SessionProcess.State was using a named process which caused conflicts when multiple session processes tried to start simultaneously during testing. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <[email protected]>
- Add Phoenix.SessionProcess.Cleanup GenServer for automatic TTL-based session cleanup - Add Phoenix.SessionProcess.Config module for centralized configuration management - Add Phoenix.SessionProcess.DefaultSessionProcess as default session implementation - Enhance ProcessSupervisor with session validation, limits, and rate limiting - Fix warning about duplicate handle_info/2 clauses in cleanup.ex - Update supervisor to include Cleanup GenServer in supervision tree - Improve session ID generation with URL-safe encoding - Add comprehensive configuration options for TTL, max sessions, and rate limiting
- Add unit tests for Cleanup module (TTL-based session cleanup) - Add unit tests for Config module (configuration validation and defaults) - Add unit tests for DefaultSessionProcess module (state management) - Add integration tests for session lifecycle, validation, and error handling - Fix terminate_session function to properly handle non-existent sessions - Improve test coverage from 6 to 28 tests - All tests passing with 0 failures
- Add telemetry events for session lifecycle monitoring
- Session start/stop events with duration metrics
- Communication events for call/cast operations
- Error events for failed operations
- Performance measurement helpers
- Implement custom error handling with detailed error types
- Phoenix.SessionProcess.Error module with human-readable messages
- Specific error types: invalid_session_id, session_limit_reached,
session_not_found, timeout, call_failed, cast_failed
- Improved error responses throughout the API
- Update ProcessSupervisor to emit telemetry events
- Emit events for validation failures and session limits
- Include duration measurements for all operations
- Add comprehensive error telemetry
- Enhance documentation with telemetry and error handling examples
- Added telemetry setup examples
- Added error handling patterns
- Updated API documentation
- Add comprehensive test suite for telemetry events
- Test all telemetry event emissions
- Test error handling scenarios
- Test performance measurement helpers
All tests pass: 32 tests + 8 doctests
- Bump version from 0.3.1 to 0.4.0 for new telemetry and error handling features - Update installation instructions in README.md
## Summary
Comprehensive improvements to the Phoenix Session Process library including performance optimizations, new features, and code quality enhancements.
## Changes Made
### Performance Optimizations
- Consolidated session startup logic to reduce code duplication
- Optimized session ID generation (25% smaller: 32 chars vs 43 chars)
- Streamlined registry lookups and process management
- Improved error handling with better telemetry integration
### New Features
- Added `session_info/0`: Get session count and module information
- Added `session_stats/0`: Get memory usage and performance metrics
- Added `find_session/1`: Find session by ID with PID return
- Added `list_sessions_by_module/1`: Filter sessions by module type
- Created `Phoenix.SessionProcess.Helpers` module with:
- Parallel session management (`start_sessions/1`, `terminate_sessions/1`)
- Broadcast capabilities (`broadcast_all/1`)
- Health monitoring (`session_health/0`)
- Retry mechanisms (`safe_call/4`, `create_session_with_retry/4`)
### Code Quality
- Applied Elixir standard formatting
- Added comprehensive type specifications
- Improved error handling and edge cases
- Fixed all test failures and compilation warnings
- Enhanced documentation and examples
### Testing
- All 32 tests passing
- All 8 doctests passing
- Zero compilation warnings
- Zero formatting issues
## Breaking Changes
None - all changes are backward compatible.
## Usage Example
```elixir
# New session statistics
stats = Phoenix.SessionProcess.session_stats()
# %{total_sessions: 5, memory_usage: 1024000, avg_memory_per_session: 204800}
# Batch operations
{:ok, sessions} = Phoenix.SessionProcess.Helpers.start_sessions(["user1", "user2"])
```
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <[email protected]>
## Summary Complete benchmarking suite with documentation for performance testing and monitoring. ## Added - **bench/simple_bench.exs**: Quick 5-10 second performance test - **bench/session_benchmark.exs**: Comprehensive 30-60 second benchmark - **bench/README.md**: Detailed benchmarking guide and performance expectations - **README.md**: Added benchmarking section with usage instructions ## Features - Session creation/termination performance testing - Memory usage analysis and scaling metrics - Concurrent operation throughput measurement - Registry lookup performance testing - Error handling performance validation - Custom benchmark templates - Performance tuning guidance ## Performance Targets - Session creation: 10,000+ sessions/sec - Session cleanup: 20,000+ sessions/sec - Memory usage: ~10KB per session - Registry lookups: 100,000+ lookups/sec 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <[email protected]>
- Add benchmarking commands with expected performance metrics - Document all 7 core components with file references - Expand process management flow with Registry bidirectional lookups - Add state management options section (GenServer, State, Redux) - Include telemetry events documentation - Add detailed configuration examples - Improve key design patterns explanations Co-Authored-By: Claude <[email protected]>
Resolved conflicts by: - Combining CLAUDE.md enhancements with devenv documentation from main - Accepting incoming changes from main for all other files - Preserving comprehensive architecture documentation improvements Co-Authored-By: Claude <[email protected]>
- Split single workflow into separate CI and Test workflows - CI workflow: Runs on all branches with Credo and Dialyzer checks - Test workflow: Runs on main/develop branches and PRs - Update to Elixir 1.18 and OTP 28 - Improve caching strategy for dependencies and Dialyzer PLT - Remove .claude/settings.local.json from version control BREAKING CHANGE: Replaces elixir.yml with ci.yml and test.yml workflows Co-Authored-By: Claude <[email protected]>
- Add credo ~> 1.7 for code style and consistency checks - Add dialyxir ~> 1.4 for static analysis and type checking - Add lint alias to run both credo --strict and dialyzer - Update mix.lock with new dependencies Usage: mix lint Co-Authored-By: Claude <[email protected]>
Fixed 29 Dialyzer type errors and 18 critical Credo issues to improve code quality and type safety. ## Dialyzer Fixes (29 errors → 0) - Fix telemetry handler arity: changed from 3 to 4 parameters to match :telemetry.attach_many/4 signature - Add missing `require Logger` to telemetry_logger.ex - Fix variable naming: rename _event to event, prefix unused vars with _ - Add missing final newline to telemetry_logger.ex ## Credo Fixes (54 issues → 36) - Remove parentheses from 15 zero-arity function definitions - Fix alias ordering: alphabetize Error, Telemetry imports - Improve code style consistency across all modules ## Test Results - All 65 tests passing - Zero Dialyzer errors - Zero compilation warnings (except unused variable advisories) ## Remaining Issues - 30 design suggestions (nested module aliases - cosmetic) - 4 readability issues (non-critical style preferences) - 2 refactoring opportunities (complexity warnings) Co-Authored-By: Claude <[email protected]>
Significantly improved the main module documentation with comprehensive @moduledoc and @doc comments for all public functions. ## Changes ### Module Documentation (@moduledoc) - Complete rewrite with detailed feature overview - Quick start guide with code examples - Configuration instructions - Custom session process examples - API overview grouped by category - Error handling documentation - Performance metrics ### Function Documentation - Added comprehensive @doc for all delegated functions: - start/1, start/2, start/3 - with parameters, returns, examples - started?/1 - with clear boolean return documentation - terminate/1 - with graceful shutdown details - call/2, call/3 - with timeout and error handling - cast/2 - with async messaging details - Enhanced existing @doc comments: - list_session/0 - comprehensive examples - session_info/0 - return value documentation - find_session/1 - comparison with started?/1 - session_stats/0 - detailed stats breakdown - list_sessions_by_module/1 - filter documentation ### Documentation Improvements - Clear parameter descriptions - Comprehensive return value documentation - Multiple usage examples for each function - Error case handling examples - Performance expectations - Integration patterns ## Impact +261 lines of documentation All public API functions now have detailed @doc comments Improved developer experience and API discoverability Co-Authored-By: Claude <[email protected]>
Co-Authored-By: Claude <[email protected]>
Fixed 2 Credo refactoring opportunities by extracting complex logic into smaller, focused functions. ## Changes ### 1. Reduced Nesting Depth in session_stats (lib/phoenix/session_process.ex) - Extracted memory calculation into separate private functions - Reduced nesting depth from 3 to 2 (max allowed) - Split logic into: - `calculate_total_memory/1` - Calculate total memory for sessions - `get_process_memory/1` - Get memory for individual process - `calculate_average_memory/2` - Calculate average with division by zero handling ### 2. Reduced Cyclomatic Complexity in handle_default_event (lib/phoenix/session_process/telemetry_logger.ex) - Reduced cyclomatic complexity from 12 to 2 (max is 9) - Replaced large case statement with pattern matching on function heads - Created separate `log_event/2` clauses for each event type - Improved maintainability and readability ## Additional Cleanup - Remove unused GEMINI.md file - Clean up devenv.nix parameter list ## Quality Metrics - Credo refactoring issues: 2 → 0 - All 65 tests passing - Code readability improved - Better separation of concerns Co-Authored-By: Claude <[email protected]>
Fixed all 4 Credo readability issues by improving code style and formatting. ## Changes ### 1. Add @moduledoc to TestProcess (test/support/test_process.ex) - Added comprehensive module documentation - Explains purpose as test helper module - Documents usage for session process testing ### 2. Use Implicit Try (lib/phoenix/session_process/process_superviser.ex) - Refactored do_call_on_session/6 to use implicit try - Refactored do_cast_on_session/5 to use implicit try - Moved catch clauses outside of explicit try blocks - Improved code readability per Elixir best practices ### 3. Fix Long Lines (lib/phoenix/session_process/cleanup.ex) - Broke long line into multiple lines (was 151 chars, max 120) - Improved readability of emit_auto_cleanup_event call ### 4. Format Code (mix.exs, lib/phoenix/session_process/telemetry_logger.ex) - Applied Elixir standard formatting - Removed unnecessary quotes from keyword list atoms - Broke long function calls into multiple lines - Improved overall code consistency ## Quality Metrics - Credo readability issues: 4 → 0 ✅ - All 65 tests passing - Zero compilation warnings - Only 30 cosmetic design suggestions remain Co-Authored-By: Claude <[email protected]>
Fixed all 30 Credo software design suggestions by adding proper module aliases and using short names throughout the codebase. This improves code readability and maintainability. Changes: - Added aliases in process_superviser.ex for Cleanup, Config, Error, Telemetry, and SessionRegistry - Added aliases in cleanup.ex for Config, Helpers, ProcessSupervisor, and Telemetry - Added aliases in helpers.ex for Config and SessionRegistry - Added aliases in main phoenix/session_process.ex for Config, ProcessSupervisor, and SessionRegistry - Added alias in test_process.ex for State - Added alias in session_process_test.exs for SessionId - Added alias in state_test.exs for Redux - Replaced all nested module references with short alias names - Used unquote() in macros to properly expand aliases All 65 tests passing. Credo reports no issues.
Fix incorrect string syntax for match variables in Registry.select calls.
Changed from string atoms (":$1", ":$2") to proper atom syntax (:"$1", :"$2")
throughout the codebase.
Changes:
- Fix list_session/0 Registry.select syntax and add guard to filter session entries
- Fix get_session_id/0 in both :process and :process_link macros
- Refactor list_sessions_by_module/1 to use Registry.lookup for cleaner implementation
- Add @impl annotations to handle_info/2 and terminate/2 in :process_link macro
- Update list_session/0 typespec to allow empty lists (fix Dialyzer warning)
Tests:
- Add comprehensive unit tests for list_session/0, list_sessions_by_module/1
- Add tests for session_info/0 and get_session_id/0 functionality
- Create TestProcessLink module for :process_link testing
All tests pass (75/75) with no warnings or linting errors.
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Summary
Enhanced the CLAUDE.md file with comprehensive architecture documentation to help future instances of Claude Code work more effectively in this repository.
Changes
Benefits
Testing