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Sanyou's Java Diary
Sanyou's Java Diary
Jun 3, 2024 · Backend Development

Understanding the Full Lifecycle of a RocketMQ Message: From Production to Deletion

This article walks through every stage of a RocketMQ message—from producer creation, routing, queue selection, and storage with zero‑copy techniques, through high‑availability replication, consumption modes, ordering guarantees, and finally automatic cleanup—providing code examples and architectural diagrams for each step.

Backend DevelopmentRocketMQZero-Copy
0 likes · 26 min read
Understanding the Full Lifecycle of a RocketMQ Message: From Production to Deletion
Open Source Linux
Open Source Linux
Jan 4, 2024 · Fundamentals

How DMA and Zero‑Copy Boost I/O Performance: A Deep Dive

This article explains Direct Memory Access (DMA), compares it with traditional I/O, details the complete DMA‑based I/O workflow, and explores zero‑copy techniques such as mmap, sendfile, and asynchronous I/O, highlighting their impact on context switches, data copies, and overall transfer performance.

DMAI/O optimizationLinux
0 likes · 14 min read
How DMA and Zero‑Copy Boost I/O Performance: A Deep Dive
Tencent Cloud Developer
Tencent Cloud Developer
Jan 9, 2023 · Operations

Linux I/O Optimization: Zero-Copy Techniques

The article explains Linux I/O optimization through zero‑copy techniques—such as mmap + write, sendfile, and splice—detailing memory hierarchy, the benefits of reducing user‑kernel copies, the suitability of async + direct I/O for large file transfers, real‑world uses like Kafka and Nginx, and inherent platform limitations.

DMALinux I/OMMU
0 likes · 32 min read
Linux I/O Optimization: Zero-Copy Techniques
Open Source Linux
Open Source Linux
Sep 15, 2021 · Fundamentals

How DMA and Zero‑Copy Boost Linux I/O Performance

This article explains how DMA and zero‑copy techniques reduce the four memory copies and context switches typical of Linux I/O, detailing their mechanisms, implementations such as sendfile, mmap and Direct I/O, and real‑world usage in Kafka and MySQL to boost performance.

DMAI/O optimizationKafka
0 likes · 18 min read
How DMA and Zero‑Copy Boost Linux I/O Performance
Top Architect
Top Architect
Feb 2, 2021 · Backend Development

Understanding Kafka Zero‑Copy and Parallel FileTransferTo Performance

This article explains Kafka's underlying storage architecture, details the zero‑copy transferTo technique in Java, compares traditional four‑copy I/O with zero‑copy, and presents parallel FileTransferTo performance tests on a multi‑core Linux system environment.

BackendFileTransferToJava
0 likes · 11 min read
Understanding Kafka Zero‑Copy and Parallel FileTransferTo Performance