Apache Traffic Server - Plugin System

Plugin System

Core Plugins (plugins/)

Stable, production-ready plugins:

• authproxy: Authentication proxy
• background_fetch: Background content fetching
• cache_promote: Cache promotion logic
• cache_range_requests: Range request handling
• cachekey: Cache key manipulation
• certifier: Certificate management
• compress: Content compression
• conf_remap: Configuration-based remapping
• escalate: Request escalation
• esi: Edge Side Includes processing
• generator: Content generation
• header_rewrite: Header manipulation
• healthchecks: Health monitoring
• ja3_fingerprint: JA3 fingerprinting
• libloader: Dynamic library loading
• lua: Lua scripting support
• multiplexer: Request multiplexing
• origin_server_auth: Origin server authentication
• prefetch: Content prefetching
• regex_remap: Regular expression remapping
• regex_revalidate: Regular expression revalidation
• remap_purge: Remapping with purge capability
• remap_stats: Remapping statistics
• server_push_preload: HTTP/2 server push preload
• slice: Content slicing
• statichit: Static content handling
• stats_over_http: HTTP statistics interface
• tcpinfo: TCP connection information
• traffic_dump: Traffic dumping for analysis
• webp_transform: WebP image transformation
• xdebug: Extended debugging

Experimental Plugins (plugins/experimental/)

• Cutting-edge features under development
• May become core plugins or be deprecated

Plugin Architecture

Hook-based Plugin System

• Multiple plugin types (remap, global, etc.)
• C++ and Lua plugin support
• Event-driven plugin execution

Plugin Configuration

• plugin.config: Plugin loading configuration
• Per-plugin configuration files
• Runtime plugin management via JSONRPC API

Plugin Development

• C++ API wrapper for plugin developers (tscpp)
• Plugin API headers (include/api/)
• Example plugins (example/plugins/)