Changelog
- f7c3276 Merge pull request #37 from rueian/fix-cluster-failover
- 4c68ce5 Merge pull request #38 from rueian/speedup-cluster-refresh
- fdedc0a feat: default conn write timeout and periodic PING
- 9b7a917 feat: speed up cluster init and refresh by parallelization
- d932192 fix: DoCache cancellation and exec failure
- a22045b fix: cluster failover to the same hostname and broken pipe in sync mode