Gocorex

Gocorex is a collection golang useful utils for distributed system and microservices.

Features

Distributed Bloom Filter

• Redis Bloom

Distributed Rate Limiter

• Redis RateLimiter

Distributed Lock

• Redis Lock
• Etcd Lock
• ZooKeeper Lock

Service Discovery

• Etcd discovery
• ZooKeeper discovery

PubSub

• PubSub
• Etcd PubSub

Cron

• Cron with min-heap, implemented by minimal heap
• TimeWheel

Concurrency

• Group, wrap the WaitGroup
• ErrGroup, run groups of goroutines, context cancel when meet error
• CtrlGroup, run special number goroutines

Metrics

• Http state metrics, http prometheus metrics handler middleware

Data structures

• Set, hash set with generics
• Heap, heap with generics
• Queue, queue with generics
• Ring, ring queue with generics

utils

• trace, recoding the latency of operations
• retry, retry operation on conditional