Rate Limit

Library

Reverse Proxy

go get github.com/esnunes/ratelimit/cmd/rl-proxy

rl-proxy -h
# Rate Limit Proxy
#
# Usage:
#   rl-proxy [flags]
#
# Flags:
#   -a, --addr string   bind address ip:port (default ":8080")
#   -b, --burst int     maximum burst size of requests (default 1)
#   -h, --help          help for rl-proxy
#   -q, --queue int     maximum queued requests
#   -r, --rate float    requests per second (default 2)

• Leaky Bucket algorithm;
• Rate Limit based on target endpoint (considering connection latency);
• Queue of connections when bucket limit reached;

TODO

• Store and retrieve context values using functions;
• Calculate rate limit value based on specific date (e.g. service startup time);
• Cover with tests;
• Create docs about library usage;
• Create docs about proxy usage;
• Add Prometheus metrics support;
  • Number of times a response status code occurred;
  • Number of no more slots error;
  • Number of requests in queue;
  • Number of requests running;
  • Histogram of requests response time;
  • General Go statistics;

License

ratelimit is licensed under the MIT license. Check the LICENSE file for details.

Author

Eduardo Nunes