Commit Graph

3 Commits

Author SHA1 Message Date
88b0509ad8 Implement PID-controlled adaptive rate limiting for database operations
- Add LoadMonitor interface in pkg/interfaces/loadmonitor/ for database load metrics
- Implement PIDController with filtered derivative to suppress high-frequency noise
  - Proportional (P): immediate response to current error
  - Integral (I): eliminates steady-state offset with anti-windup clamping
  - Derivative (D): rate-of-change prediction with low-pass filtering
- Create BadgerLoadMonitor tracking L0 tables, compaction score, and cache hit ratio
- Create Neo4jLoadMonitor tracking query semaphore usage and latencies
- Add AdaptiveRateLimiter combining PID controllers for reads and writes
- Configure via environment variables:
  - ORLY_RATE_LIMIT_ENABLED: enable/disable rate limiting
  - ORLY_RATE_LIMIT_TARGET_MB: target memory limit (default 1500MB)
  - ORLY_RATE_LIMIT_*_K[PID]: PID gains for reads/writes
  - ORLY_RATE_LIMIT_MAX_*_MS: maximum delays
  - ORLY_RATE_LIMIT_*_TARGET: setpoints for reads/writes
- Integrate rate limiter into Server struct and lifecycle management
- Add comprehensive unit tests for PID controller behavior

Files modified:
- app/config/config.go: Add rate limiting configuration options
- app/main.go: Initialize and start/stop rate limiter
- app/server.go: Add rateLimiter field to Server struct
- main.go: Create rate limiter with appropriate monitor
- pkg/run/run.go: Pass disabled limiter for test instances
- pkg/interfaces/loadmonitor/: New LoadMonitor interface
- pkg/ratelimit/: New PID controller and limiter implementation

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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2025-12-11 22:45:11 +01:00
c1bd05fb04 Adjust ACL behavior for "none" mode and make query cache optional
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This commit allows skipping authentication, permission checks, and certain filters (e.g., deletions, expirations) when the ACL mode is set to "none" (open relay mode). It also introduces a configuration option to disable query caching to reduce memory usage. These changes improve operational flexibility for open relay setups and resource-constrained environments.
2025-12-05 11:25:34 +00:00
5e6c0b80aa Add Relay functionality for managing startup and shutdown processes
- Introduced a new package `run` with a `Relay` struct to manage the lifecycle of a relay instance.
- Implemented `Start` and `Stop` methods for initializing and gracefully shutting down the relay, including options for log capturing and data directory cleanup.
- Added methods to retrieve captured stdout and stderr logs.
- Enhanced configuration handling for data directory and logging based on user-defined options.
2025-10-30 17:57:57 +00:00