May 19, 2026 · Fundamentals

Master the Linux fasync Mechanism and Understand Signal‑Driven Asynchronous Notification

This article explains the Linux kernel fasync mechanism, compares it with other I/O models, details the underlying data structures and key functions, and provides step‑by‑step driver and user‑space code examples for implementing signal‑driven asynchronous notifications in embedded and Linux driver development.

Linux kernelSIGIOasynchronous notification

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Master the Linux fasync Mechanism and Understand Signal‑Driven Asynchronous Notification

Architecture Digest

May 31, 2017 · Operations

Designing Distributed Transaction Architecture and Ensuring Data Consistency in a Flow Recharge System

The article explains how to break large transactions into small atomic operations combined with asynchronous messaging, describes ACID properties, presents banking and flow‑recharge scenarios, compares local and distributed (flexible) transactions, and details micro‑service architecture, compensation and async strategies to achieve eventual consistency.

CompensationData ConsistencyDistributed Transactions

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Designing Distributed Transaction Architecture and Ensuring Data Consistency in a Flow Recharge System