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https://github.com/pacnpal/thrillwiki_django_no_react.git
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Add secret management guide, client-side performance monitoring, and search accessibility enhancements
- Introduced a comprehensive Secret Management Guide detailing best practices, secret classification, development setup, production management, rotation procedures, and emergency protocols. - Implemented a client-side performance monitoring script to track various metrics including page load performance, paint metrics, layout shifts, and memory usage. - Enhanced search accessibility with keyboard navigation support for search results, ensuring compliance with WCAG standards and improving user experience.
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pacnpal
146
backend/config/settings/cache.py
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146
backend/config/settings/cache.py
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"""
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Cache configuration for thrillwiki project.
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This module configures Redis-based caching with connection pooling,
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session caching, and API response caching.
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Why python-decouple?
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- Already used in base.py for consistency
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- Simpler API than django-environ
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- Sufficient for our configuration needs
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- Better separation of config from code
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Cache Backends:
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- default: General purpose caching (queries, templates, etc.)
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- sessions: User session storage (separate for security)
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- api: API response caching (high concurrency)
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"""
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from decouple import config
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# =============================================================================
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# Redis Configuration
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# =============================================================================
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REDIS_URL = config("REDIS_URL", default="redis://127.0.0.1:6379/1")
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# Redis cache backend classes
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DJANGO_REDIS_CACHE_BACKEND = "django_redis.cache.RedisCache"
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DJANGO_REDIS_CLIENT_CLASS = "django_redis.client.DefaultClient"
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# =============================================================================
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# Cache Configuration
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# =============================================================================
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# Multiple cache backends for different purposes
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CACHES = {
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# Default cache for general purpose caching
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# Used for: database queries, computed values, template fragments
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"default": {
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"BACKEND": DJANGO_REDIS_CACHE_BACKEND,
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"LOCATION": config("REDIS_URL", default="redis://127.0.0.1:6379/1"),
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"OPTIONS": {
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"CLIENT_CLASS": DJANGO_REDIS_CLIENT_CLASS,
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# Use hiredis for faster C-based parsing
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"PARSER_CLASS": "redis.connection.HiredisParser",
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# Connection pooling for better performance
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"CONNECTION_POOL_CLASS": "redis.BlockingConnectionPool",
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"CONNECTION_POOL_CLASS_KWARGS": {
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"max_connections": config(
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"REDIS_MAX_CONNECTIONS", default=100, cast=int
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),
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"timeout": config("REDIS_CONNECTION_TIMEOUT", default=20, cast=int),
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"socket_keepalive": True,
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"socket_keepalive_options": {
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1: 1, # TCP_KEEPIDLE: Start keepalive after 1s idle
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2: 1, # TCP_KEEPINTVL: Send probes every 1s
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3: 3, # TCP_KEEPCNT: Close after 3 failed probes
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},
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"retry_on_timeout": True,
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"health_check_interval": 30,
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},
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# Compress cached data to save memory
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"COMPRESSOR": "django_redis.compressors.zlib.ZlibCompressor",
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# Graceful degradation if Redis is unavailable
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"IGNORE_EXCEPTIONS": config(
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"REDIS_IGNORE_EXCEPTIONS", default=True, cast=bool
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),
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},
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"KEY_PREFIX": config("CACHE_KEY_PREFIX", default="thrillwiki"),
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"VERSION": 1,
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},
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# Session cache - separate for security isolation
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# Uses a different Redis database (db 2)
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"sessions": {
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"BACKEND": DJANGO_REDIS_CACHE_BACKEND,
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"LOCATION": config("REDIS_SESSIONS_URL", default="redis://127.0.0.1:6379/2"),
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"OPTIONS": {
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"CLIENT_CLASS": DJANGO_REDIS_CLIENT_CLASS,
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"PARSER_CLASS": "redis.connection.HiredisParser",
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"CONNECTION_POOL_CLASS": "redis.BlockingConnectionPool",
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"CONNECTION_POOL_CLASS_KWARGS": {
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"max_connections": config(
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"REDIS_SESSIONS_MAX_CONNECTIONS", default=50, cast=int
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),
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"timeout": 10,
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"socket_keepalive": True,
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},
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},
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"KEY_PREFIX": "sessions",
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},
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# API cache - high concurrency for API responses
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# Uses a different Redis database (db 3)
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"api": {
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"BACKEND": DJANGO_REDIS_CACHE_BACKEND,
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"LOCATION": config("REDIS_API_URL", default="redis://127.0.0.1:6379/3"),
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"OPTIONS": {
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"CLIENT_CLASS": DJANGO_REDIS_CLIENT_CLASS,
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"PARSER_CLASS": "redis.connection.HiredisParser",
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"CONNECTION_POOL_CLASS": "redis.BlockingConnectionPool",
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"CONNECTION_POOL_CLASS_KWARGS": {
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"max_connections": config(
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"REDIS_API_MAX_CONNECTIONS", default=100, cast=int
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),
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"timeout": 15,
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"socket_keepalive": True,
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"retry_on_timeout": True,
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},
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# Compress API responses to save bandwidth
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"COMPRESSOR": "django_redis.compressors.zlib.ZlibCompressor",
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},
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"KEY_PREFIX": "api",
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},
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}
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# =============================================================================
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# Session Configuration
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# =============================================================================
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# Use Redis for session storage for better performance and scalability
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SESSION_ENGINE = "django.contrib.sessions.backends.cache"
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SESSION_CACHE_ALIAS = "sessions"
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# Session timeout in seconds (1 hour)
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SESSION_COOKIE_AGE = config("SESSION_COOKIE_AGE", default=3600, cast=int)
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# Update session on each request (sliding expiry)
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SESSION_SAVE_EVERY_REQUEST = config(
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"SESSION_SAVE_EVERY_REQUEST", default=True, cast=bool
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)
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# Session persists until cookie expires (not browser close)
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SESSION_EXPIRE_AT_BROWSER_CLOSE = config(
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"SESSION_EXPIRE_AT_BROWSER_CLOSE", default=False, cast=bool
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)
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# =============================================================================
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# Cache Middleware Settings
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# =============================================================================
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# For Django's cache middleware (UpdateCacheMiddleware/FetchFromCacheMiddleware)
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CACHE_MIDDLEWARE_SECONDS = config("CACHE_MIDDLEWARE_SECONDS", default=300, cast=int)
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CACHE_MIDDLEWARE_KEY_PREFIX = config(
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"CACHE_MIDDLEWARE_KEY_PREFIX", default="thrillwiki"
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)
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