A distributed persistent key value store that speaks http. Inspired by minkeyvalue.
precompiled binaries are available on release page or
you can run cargo install kalavara command to install kalavara
Master server stores index (key, url of volume server where the value is stored) in rocksdb. Requests are redirected to curresponding volume server after metadata is updated.
to start the server, run
master -p 6000 -d /tmp/kalavadb -v http://volume1:6001 http://volume2:6002Volume server stores values in file system. For atomicity temporary files are
first created in destdir/tmp directory and then moved to destination path.
For this approach to work, destdir/tmp and destination path should be in same
file system
to start the volume server, run
volume -p 7000 -d /tmp/kalavarastoreif master server is not aware of this volume server, register with
volume -p 7000 -d /tmp/kalavarastore -m http://master.server -b http://this.volume.server:7000- insert a key-value
curl -XPUT -L -d value http://localhost:6000/store/key- retrive value
curl -XGET -L http://localhost:6000/store/key- delete a key
curl -XDELETE -L http://localhost:6000/store/key- register a new volume server with master
curl -XPOST -d http://newvolume.server http://localhost:6000/admin/add-volume./wrk -t2 -c100 -d10s http://localhost:6000/missingkey
Running 10s test @ http://localhost:6000/missingkey
2 threads and 100 connections
Thread Stats Avg Stdev Max +/- Stdev
Latency 2.04ms 1.61ms 28.98ms 83.07%
Req/Sec 21.33k 4.76k 34.42k 66.00%
426423 requests in 10.07s, 65.88MB read
Non-2xx or 3xx responses: 426423
Requests/sec: 42359.95
Transfer/sec: 6.54MB
To the extent possible under law, the author(s) have dedicated all copyright related and neighboring rights to this software to the public domain worldwide. This software is distributed without any warranty.