What is it?

iPage is a java key-value store library, which is designed for message system.

Features

• Very fast write by sequence appending
• Random reading by index
• [A]synchronize invocation
• Flush By write count or time elpase
• Group commit
• Date recovery after crash
• Garbage data collecting (or Defragment)
• Degrade after OOM
• Monitor and control by JMX

More

Please see issues.

Benchmark

| Case            |   Times   | Total Eplase | Average Elapse | TPS         | Concurrency |
|-----------------|-----------|--------------|----------------|-------------|-------------|
| Random get      | 1,000,000 | 6.009 s      | 6,008   ns     | 166444.74   | 8           |
| Async add       | 1,000,000 | 24.90 s      | 24,904  ns     | 40154.19    | 16          |
| Async remove    | 1,000,000 | 32.84 s      | 32,842  ns     | 30448.82    | 16          |
| Sync add        | 16,384    | 5.142 s      | 313,857 ns     | 3186.31     | 32          |

• Read and write data is 1KB

Enviroment

• Linux 2.6.18-164.el5
• OpenJDK 64-Bit Server VM (build 1.6.0-b09, mixed mode)
• Intel(R) Xeon(R) CPU E5620 @ 2.40GHz 8 core
• Memory 24GB
• SCSI 1TB

Getting started

Preconditions

Make sure your enviroment has:

• Git
• Maven

Run test

> git clone git@github.com:zhongl/iPage.git
> cd iPage
> mvn clean test

Run benchmark

> mvn clean test -Dtest=IPageBenchmark -DargLine="-Xmx512m -Xms512m"

Usage

Please see:

• IPageTest

More

Design Doc