Merge pull request #921 from drmingdrmer/45-doc #2688

Job	Run time
Build (nightly, bench,serde,bt,singlethreaded)	1m 10s
openraft-test (stable, 0)	4m 12s
openraft-test (nightly, 30)	4m 34s
cluster-benchmark (cluster_benchmark)	1m 13s
openraft-test (nightly, 0, single-term-leader)	4m 9s
examples (stable, raft-kv-memstore)	3m 34s
external-stores (stores/rocksstore-v2)	13m 18s
examples (stable, raft-kv-rocksdb)	14m 48s
examples (nightly, raft-kv-memstore)	3m 17s
examples (nightly, raft-kv-rocksdb)	11m 52s
lint	11m 30s
openraft-feature-test (nightly)	50s
openraft-test-bench (nightly)	1m 27s
openraft-feature-test (nightly, serde)	1m 10s
openraft-feature-test (nightly, single-term-leader)	52s
openraft-feature-test (nightly, single-term-leader,serde,singlethreaded)	1m 9s
stores (memstore)	46s
stores (rocksstore)	13m 57s
stores (rocksstore-compat07)	6m 13s
tests-feature-test (nightly)	2m 38s
stores (sledstore)	53s
tests-feature-test (nightly, single-term-leader)	5m 12s
tests-feature-test (nightly, loosen-follower-log-revert)	2m 34s
	1h 51m 18s

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