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Liangxu Linux
Liangxu Linux
Oct 29, 2025 · Fundamentals

Why Use a Lightweight Ring Buffer? Deep Dive into LwRB for Embedded Systems

This article explains why circular buffers are essential for efficient data‑stream handling in embedded systems, introduces the open‑source LwRB library, details its memory‑safe and thread‑safe design using C11 atomics, provides core data structures and example code, and compares ring buffers with normal buffers and message queues.

DMAEmbedded CRing Buffer
0 likes · 14 min read
Why Use a Lightweight Ring Buffer? Deep Dive into LwRB for Embedded Systems
Big Data Technology & Architecture
Big Data Technology & Architecture
Sep 16, 2021 · Big Data

Understanding Hadoop's Circular Buffer in the Shuffle Phase

This article explains how Hadoop's MapReduce shuffle uses a circular buffer data structure to store serialized key/value pairs and their metadata in memory, describes its initialization, write path, spill handling, and the underlying algorithms that ensure efficient in‑memory sorting and disk spilling.

HadoopIn-Memory BufferMapReduce
0 likes · 24 min read
Understanding Hadoop's Circular Buffer in the Shuffle Phase