mt-redis

A multi-threaded Redis fork with Read-Copy-Update (RCU) support to achieve high performance.

Features

• Implement Master-Worker Pattern, allowing key-value store to perform simultaneous processing across multiple threads.
• Use an event-loop per thread I/O model.
• Support for scheduling request operations between threads.
• RCU can support lock-free sharing between 1 writer thread and multiple reader threads to boost read operation performance.
• Can achieve over 1 million Ops/sec powered by an ordinary server.

Performance

The following benchmarks show the performance of mt-redis and Redis using the memtier_benchmark tool. These benchmarks were produced on Ubuntu Linux 20.04-LTS with an Intel Xeon CPU E5-2650 v4 processor.

Valkey 7.2.5

Launch the server:

valkey-server --appendonly no --save ""

Run benchmark:

memtier_benchmark --hide-histogram -p 6379

Reference results:

============================================================================================================================
Type         Ops/sec     Hits/sec   Misses/sec    Avg. Latency     p50 Latency     p99 Latency   p99.9 Latency       KB/sec
----------------------------------------------------------------------------------------------------------------------------
Sets         7773.05          ---          ---         2.34606         2.15900         4.95900         7.29500       598.66
Gets        77645.07         0.00     77645.07         2.34192         2.15900         4.86300         7.39100      3024.61
Waits           0.00          ---          ---             ---             ---             ---             ---          ---
Totals      85418.12         0.00     77645.07         2.34230         2.15900         4.86300         7.39100      3623.27

mt-redis

Launch the server:

redis-server --appendonly no --save ""

Run benchmark:

memtier_benchmark --hide-histogram -p 6379

Reference results:

============================================================================================================================
Type         Ops/sec     Hits/sec   Misses/sec    Avg. Latency     p50 Latency     p99 Latency   p99.9 Latency       KB/sec
----------------------------------------------------------------------------------------------------------------------------
Sets        23095.97          ---          ---         0.85914         0.76700         1.59100         3.51900      1778.79
Gets       230705.95         0.00    230705.95         0.80290         0.75100         1.36700         2.70300      8986.99
Waits           0.00          ---          ---             ---             ---             ---             ---          ---
Totals     253801.92         0.00    230705.95         0.80802         0.75100         1.39900         2.81500     10765.79

Prerequisites

To build mt-redis from source, install the build-essential meta-package from the Ubuntu repositories.

$ sudo apt install build-essential autoconf