Developer guide
etcd guide for developers
Discover other etcd members in a cluster bootstrap phase
Configuring local clusters for testing and development
etcdctl: a command line tool for interacting with the etcd server
Why you should consider using the gRPC gateway
go-grpc: for resolving gRPC endpoints with an etcd backend
Use etcd embed go package to run an etcd server within your application
etcd limits: requests and storage
using etcd features
Complete reference for the etcd v3 API
Reference for etcd concurrency APIs