Redisun 1.4.0: A 33KB Java Redis Client That Beats Redisson by 8×

Why Redisun Matters

Redisun 1.4.0 is a lightweight Redis client built on smart‑socket, targeting Java developers who need maximum performance.

Size Comparison

Redisun: 33KB (≈ a high‑resolution image)

Lettuce: ~2 MB (≈ 60 Redisun)

Jedis: ~500 KB (≈ 15 Redisun)

Redisson: 1.8 MB+ (≈ 55 Redisun)

Smaller JAR size translates into faster startup, lower memory consumption, smaller container images and reduced bandwidth.

Performance Numbers

Asynchronous Operations

Redisun:  ████████████████████████████████████████ 485,000 OPS
Redisson: ███ 50,000 OPS
Lettuce:  ███ 60,000 OPS

Redisun is 8× Lettuce and 9.7× Redisson.

Synchronous Operations

Redisun:  ████████████████████ 76,000 OPS
Lettuce:  ████ 30,000 OPS
Jedis:    ████ 25,000 OPS
Redisson: ████ 28,000 OPS

Redisun leads other clients by 2–3×.

Real‑world impact: Same hardware can handle 8× more concurrent requests. QPS can cut server costs by up to 80%. Same latency requirements can be met with fewer resources.

Core Technical Secrets

Connection Reuse

Traditional clients wait for a response per request. Redisun’s connection‑reuse allows a single TCP connection to process multiple concurrent requests in parallel.

Traditional: [Req1] → wait → [Resp1] → [Req2] → wait → [Resp2]
Redisun:    [Req1] → [Req2] → [Req3] → [Resp1] → [Resp2] → [Resp3]
            ↑ parallel processing, no waiting

Result: throughput improves 5–10×.

Java AIO Optimizations

Zero‑blocking I/O – fully leverages OS asynchronous capabilities.

Zero‑thread waste – a single thread handles tens of thousands of concurrent connections.

Zero‑copy transfer – reduces data copying, lowering CPU usage.

Three‑Minute Get‑Started Guide

1. Add Maven Dependency

<dependency>
    <groupId>tech.smartboot</groupId>
    <artifactId>redisun</artifactId>
    <version>1.4.0</version>
</dependency>

2. Write Code

import tech.smartboot.redisun.Redisun;

Redisun redisun = Redisun.create(options ->
    options.setAddress("127.0.0.1:6379")
);

redisun.set("user:1001", "Alice");
String user = redisun.get("user:1001");
redisun.close();

3. Enjoy Lightning Speed

The client starts instantly and delivers high‑throughput operations.

v1.4.0 Updates

Underlying smart‑socket upgraded to 2.0.0 – API unchanged, seamless upgrade.

Ecosystem sync – follows upstream framework evolution.

Stability – maintains consistent reliability.

Community & Resources

Open‑source projects thrive with community support.

Related links: GitHub repository: https://github.com/smartboot/redisun Official documentation: https://smartboot.tech/redisun smart‑socket: https://github.com/smartboot/smart-socket

Redisun: small, fast, and stable – redefining Redis client performance with just 33KB.