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Ziru Technology

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Recent Articles

Latest from Ziru Technology

48 recent articles
Ziru Technology
Ziru Technology
Aug 3, 2020 · Databases

Unlocking MySQL Binlog: How Replication, Recovery, and Auditing Really Work

This article explains the MySQL binary log (binlog), its structure and contents, the three main uses—point‑in‑time recovery, master‑slave replication, and audit logging—followed by a detailed walkthrough of the replication process, an overview of Alibaba's Canal mechanism, and extensive code examples illustrating binlog parsing and event handling.

CanalMySQLreplication
0 likes · 12 min read
Unlocking MySQL Binlog: How Replication, Recovery, and Auditing Really Work
Ziru Technology
Ziru Technology
Feb 16, 2020 · Information Security

Mastering Drozer: Step‑by‑Step Android Security Testing Guide

This guide walks through installing Drozer, configuring port forwarding, connecting the console, and using a variety of commands to enumerate packages, activities, content providers, services, and broadcast receivers on Android devices, while also addressing common errors and demonstrating vulnerability scans such as SQL injection and directory traversal.

DrozerInformation SecurityPenetration Testing
0 likes · 9 min read
Mastering Drozer: Step‑by‑Step Android Security Testing Guide
Ziru Technology
Ziru Technology
Oct 21, 2019 · Databases

Why MySQL Indexes Aren’t Always Faster: Models, Types, and Common Pitfalls

Understanding MySQL indexes—from hash tables, ordered arrays, and B+ trees—to their practical use cases, including clustered and secondary indexes, reveals why they boost query speed, when they may hinder performance, and how factors like selectivity, dirty page flushing, type mismatches, and function usage affect query efficiency.

B+TreeIndexingMySQL
0 likes · 10 min read
Why MySQL Indexes Aren’t Always Faster: Models, Types, and Common Pitfalls
Ziru Technology
Ziru Technology
Sep 19, 2019 · Frontend Development

How to Build a Comprehensive Front-End Performance Monitoring System

This article explains how to create a front‑end monitoring client that captures global JavaScript errors, tracks resource loading and page performance metrics, intercepts AJAX and fetch requests, gathers PV/UV statistics, and reports data using various strategies such as image beacons, POST, and IndexedDB storage.

IndexedDBajaxbeacon
0 likes · 14 min read
How to Build a Comprehensive Front-End Performance Monitoring System
Ziru Technology
Ziru Technology
Sep 19, 2019 · Backend Development

Why LongAdder Beats AtomicLong in High Contention: Deep Dive into Java’s Concurrent Counter

This article explains how java.util.concurrent.atomic.LongAdder provides a more efficient counting mechanism than AtomicLong under high contention, discusses its trade‑offs in space and precision, presents JMH benchmark results, and walks through the internal implementation details such as cells, CAS loops, and hash‑based distribution.

CASJMHJava
0 likes · 13 min read
Why LongAdder Beats AtomicLong in High Contention: Deep Dive into Java’s Concurrent Counter
Ziru Technology
Ziru Technology
Sep 6, 2019 · Backend Development

How to Build and Deploy PHP Application Images on the Omega Platform

This article guides readers through the architecture, extension types, image construction steps, configuration details, and local debugging procedures for deploying PHP applications as container images on the Omega platform, highlighting best practices and common pitfalls.

DockerImage BuildKubernetes
0 likes · 10 min read
How to Build and Deploy PHP Application Images on the Omega Platform
Ziru Technology
Ziru Technology
Sep 6, 2019 · Backend Development

How Alibaba Canal Enables Real-Time MySQL Binlog Replication and Incremental Data Sync

Canal, an open‑source Alibaba project, mimics MySQL slave behavior to subscribe to binlog events, parses them, and supports both standalone and ZooKeeper‑coordinated cluster deployments, offering flexible state storage, message processing pipelines, and integration options such as TCP, Kafka, and RocketMQ for real‑time data synchronization.

CanalJavaMySQL
0 likes · 11 min read
How Alibaba Canal Enables Real-Time MySQL Binlog Replication and Incremental Data Sync
Ziru Technology
Ziru Technology
Aug 29, 2019 · Backend Development

Why Spring Boot Devtools Triggers ClassCastException and How to Fix It

This article explains why adding spring-boot-devtools can trigger a ClassCastException due to its dual classloader mechanism, demonstrates how to reproduce the issue in a Maven multi‑module project, and provides two practical solutions: customizing the RestartClassLoader or removing the devtools dependency.

ClassCastExceptionDubboJava
0 likes · 13 min read
Why Spring Boot Devtools Triggers ClassCastException and How to Fix It