/kvrocks

the kvrocks(kv-rocks) is SSD NoSQL which based on rocksdb, and compatible with the Redis protocol, intention to decrease the cost of memory and increase the capability

Primary LanguageC++MIT LicenseMIT

kvrocks image

kvrocks is an open-source key-value database. which is based on rocksdb and compatible with Redis protocol. Intention to decrease the cost of memory and increase the capability while compared to Redis. The design of replication and storage was inspired by rocksplicator and blackwidow.

kvrocks has the following key features:

  • Redis protocol, user can use redis client to visit the kvrocks
  • Namespace, similar to redis db but use token per namespace
  • Replication, async replication using binlog like MySQL
  • High Available, supports redis sentinel to failover when master or slave was failed

Build and run

requirements

  • g++ (required by c++11, version >= 4.8)
  • autoconf automake libtool

Build

NOTE: You shoud install the snappy first:

# Centos/Redhat
sudo yum install -y snappy snappy-devel autoconf automake libtool

# Ubuntu
sudo apt-get install libsnappy-dev autoconf automake libtool

# MACOSX
brew install snappy
$ git clone --recursive https://github.com/meitu/kvrocks.git
$ cd kvrocks
$ make -j4

run

$ ./src/kvrocks -c kvrocks.conf

TEST

NOTE: You shoud install the googletest first

make test

Supported platforms

  • centos 6/7
  • ubuntu
  • macosx

Try kvrocks using Docker

$ docker run -it hulkdev/kvrocks
$ redis-cli -a foobared -p 6666

127.0.0.1:6666> get a
(nil)

Namspace

namespace was used to isolate data between users. unlike all the redis databases can be visited by requirepass, we use one token per namespace. requirepass was regraded as admin token, only admin token allows to access the namespace command, as well as some commands like config, slaveof, bgave, etc…

# add token
127.0.0.1:6666>  namespace add ns1 mytoken
OK

# update token
127.0.0.1:6666> namespace set ns1 new_token
OK

# list namespace
127.0.0.1:6666> namespace get *
1) "ns1"
2) "new_token"
3) "__namespace"
4) "foobared"

# delete namespace
127.0.0.1:6666> namespace del ns1
OK

DOCs

Migrate Tools

  • migrate from redis to kvrocks, use redis-migrate-tool which developed by vipshop
  • migrate from kvrocks to redis. use kvrocks2redis in build dir

Performance

Hardware

  • CPU: 48 cores Intel(R) Xeon(R) CPU E5-2650 v4 @ 2.20GHz
  • Memory: 32 GiB
  • NET: Intel Corporation I350 Gigabit Network Connection
  • DISK: 2TB NVMe Intel SSD DC P460

Benchmark Client: multi-thread redis-benchmark(unstable branch)

1. Commands QPS

kvorkcs: workers = 16, benchmark: 8 threads/ 512 conns / 128 payload

latency: 99.9% < 10ms

image

2. QPS on different payload

kvorkcs: workers = 16, benchmark: 8 threads/ 512 conns

latency: 99.9% < 10ms

image

3. QPS on different workers

kvorkcs: workers = 16, benchmark: 8 threads/ 512 conns / 128 payload

latency: 99.9% < 10ms

image

License

kvrocks is under the MIT license. See the LICENSE file for details.