* chore: impl batch write
* chore: update test
* chore: using save point to optimize write
* chore: update docs
* chore: fix test
* chore: increase write speed
* chore: use redis sorted set
* chore: fallback to write to disk directly when fail to queue
* chore: fix test
* chore: fix test
* chore: update log
* chore: add metrics