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Database Operations

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Efficient Ops
Efficient Ops
Feb 26, 2025 · Databases

Efficient Operations for Heterogeneous Databases: Insights from Guangdong Mobile

The article summarizes Lai Kunchi's presentation at the 24th GOPS Global Operations Conference, covering the current state and challenges of database development, Guangdong Mobile's database operation system, and future directions for managing heterogeneous databases in evolving business architectures.

AIOpsDatabase OperationsDevOps
0 likes · 3 min read
Efficient Operations for Heterogeneous Databases: Insights from Guangdong Mobile
php中文网 Courses
php中文网 Courses
Feb 21, 2025 · Databases

How to Use mysqli_num_rows in PHP to Get the Number of Rows in a Result Set

This article explains how to use PHP's mysqli_num_rows function to retrieve the number of rows in a MySQL result set, providing a complete example that connects to a database, executes a query, checks for errors, obtains the row count, and outputs it.

Database OperationsMySQLPHP
0 likes · 4 min read
How to Use mysqli_num_rows in PHP to Get the Number of Rows in a Result Set
Aikesheng Open Source Community
Aikesheng Open Source Community
Feb 18, 2025 · Databases

Using pt-online-schema-change to Quickly Clean Data and Resolve Disk‑Space Alerts in MySQL

This article explains how to handle MySQL disk‑space alerts by using the pt‑online‑schema‑change (pt‑osc) tool to selectively retain needed rows, migrate data to a temporary table, and drop the original table, thereby achieving fast, low‑impact data cleanup.

Data CleanupDatabase OperationsDisk Space
0 likes · 10 min read
Using pt-online-schema-change to Quickly Clean Data and Resolve Disk‑Space Alerts in MySQL
Xiaolei Talks DB
Xiaolei Talks DB
Dec 27, 2024 · Databases

Mastering Production TiDB Cluster Management: Access, Scaling, and Upgrades

This guide walks through accessing a production TiDB cluster via pod IP, Service ClusterIP, or DNS, initializing users and databases, and performing scaling and version upgrades by editing the cluster's YAML configuration in Kubernetes.

Database OperationsKubernetesTiDB
0 likes · 9 min read
Mastering Production TiDB Cluster Management: Access, Scaling, and Upgrades
Zhihu Tech Column
Zhihu Tech Column
Oct 28, 2024 · Databases

TiDB Architecture, Deployment Choices, and Zhihu’s Database Platform Practices

This article explains TiDB’s distributed relational database architecture, compares Kubernetes‑based and physical‑machine deployments, and describes Zhihu’s platform‑driven approach—including TiDB Operator, TiUP, self‑service tooling, monitoring, backup, security, and FinOps—to enable efficient database management for both developers and DBAs.

Database OperationsDistributed DatabaseFinOps
0 likes · 15 min read
TiDB Architecture, Deployment Choices, and Zhihu’s Database Platform Practices
Test Development Learning Exchange
Test Development Learning Exchange
Jul 24, 2024 · Databases

Python MySQL Database Operations: 10 Practical Examples

This article provides 10 detailed Python code examples demonstrating how to connect to, query, insert, update, delete, and manage MySQL databases with proper error handling and resource management.

CRUDDatabase ManagementDatabase Operations
0 likes · 4 min read
Python MySQL Database Operations: 10 Practical Examples
Aikesheng Open Source Community
Aikesheng Open Source Community
Jun 11, 2024 · Databases

ClickHouse Data Recovery Procedure for a Failed Disk in a 4‑Shard 3‑Replica Cluster

This article details a step‑by‑step recovery of a ClickHouse 4‑shard, 3‑replica cluster after a node’s disks failed, covering verification of residual data, Zookeeper metadata cleanup, table reconstruction, distributed table restoration, and validation of synchronization across replicas.

ClickHouseData RecoveryDatabase Operations
0 likes · 8 min read
ClickHouse Data Recovery Procedure for a Failed Disk in a 4‑Shard 3‑Replica Cluster
Qunar Tech Salon
Qunar Tech Salon
Feb 20, 2024 · Databases

Qunar.com Redis Automation Operations System: Architecture, Deployment, Migration, Scaling, and Inspection

This article details Qunar.com's Redis automation operations system, covering background challenges, the high‑availability cluster architecture, resource management, automated deployment, various migration strategies, scaling mechanisms with RedisGate, inspection processes, and future AI‑driven enhancements.

AIDatabase OperationsMigration
0 likes · 14 min read
Qunar.com Redis Automation Operations System: Architecture, Deployment, Migration, Scaling, and Inspection
Baidu Geek Talk
Baidu Geek Talk
Feb 7, 2024 · Artificial Intelligence

Design and Implementation of a Knowledge-Base Intelligent Q&A System for Database Operations Using Large Models

The paper details Baidu Intelligent Cloud’s design and deployment of a domain‑specific knowledge‑base Q&A system for database operations, combining prompt‑engineered LLMs with hybrid vector‑search using LangChain, BES vector store, and custom ingestion, addressing recall, token limits, and hallucination challenges across dashboard and IM bot interfaces.

AIDatabase OperationsLangChain
0 likes · 16 min read
Design and Implementation of a Knowledge-Base Intelligent Q&A System for Database Operations Using Large Models
Aikesheng Open Source Community
Aikesheng Open Source Community
Jul 26, 2023 · Databases

Resolving Crash Issues When Installing MariaDB Audit Plugin on MySQL 5.7

This article analyzes why the MariaDB audit plugin crashes on MySQL 5.7, presents compatibility tables before and after source modification, details the verification steps, and provides a step‑by‑step solution including source code changes and recompilation to make the plugin work reliably.

Audit PluginCompatibilityDatabase Operations
0 likes · 14 min read
Resolving Crash Issues When Installing MariaDB Audit Plugin on MySQL 5.7
Aikesheng Open Source Community
Aikesheng Open Source Community
Jun 14, 2023 · Databases

MongoDB Crash Analysis: WT_SESSION Exhaustion Caused by Index Drop During Background Index Build

An original case study examines a MongoDB 4.0.14 replica set crash triggered by exceeding the WiredTiger session limit when a primary creates a background index and subsequently drops it, causing blocking on the secondary, leading to connection saturation, session exhaustion, and instance failure.

Database OperationsIndexingMongoDB
0 likes · 10 min read
MongoDB Crash Analysis: WT_SESSION Exhaustion Caused by Index Drop During Background Index Build
Code Ape Tech Column
Code Ape Tech Column
Jun 2, 2023 · Backend Development

Custom SQL Injector Guide for MyBatis-Plus: Built‑in and User‑Defined Injectors

This article explains what SQL injectors are in MyBatis‑Plus, lists the built‑in extended injectors, shows how to configure them globally, demonstrates custom mapper creation, provides complete code examples and test cases, and guides readers through building their own SQL injector for full‑field updates and batch operations.

Custom MapperDatabase OperationsJava backend
0 likes · 9 min read
Custom SQL Injector Guide for MyBatis-Plus: Built‑in and User‑Defined Injectors
Efficient Ops
Efficient Ops
Mar 8, 2023 · Databases

Scaling Multi-Cloud Database Operations: Huolala’s Stability and Automation Playbook

The article details Huolala’s comprehensive approach to managing diverse databases across multiple clouds, covering systematic stability engineering, automated SQL governance, Redis and Kafka reliability strategies, cost‑optimization tactics, and the evolving roles of modern DBAs in a complex, high‑scale environment.

DBADatabase OperationsMulti-Cloud
0 likes · 16 min read
Scaling Multi-Cloud Database Operations: Huolala’s Stability and Automation Playbook
Aikesheng Open Source Community
Aikesheng Open Source Community
Mar 1, 2023 · Operations

Guide to Expanding an OceanBase Cluster: Adding Zones and Resources

This article provides a step‑by‑step guide for scaling an OceanBase cluster, covering both white‑screen and black‑screen methods to add zones (replicas) and resources (OBServers), including configuration file preparation, deployment commands, zone addition, verification queries, and procedures for both expansion and contraction.

Cluster ScalingDatabase OperationsObserver
0 likes · 12 min read
Guide to Expanding an OceanBase Cluster: Adding Zones and Resources
HomeTech
HomeTech
Feb 1, 2023 · Databases

TiDB Database Deployment and Operational Practices at AutoHome

This article presents a comprehensive case study of TiDB, an open‑source distributed relational database, detailing its features, architecture, evolution within AutoHome, key business applications such as recommendation pools, financial reporting, and interactive events, as well as the automated operations and troubleshooting practices adopted to ensure high availability and scalability.

AutohomeCase StudyDatabase Operations
0 likes · 6 min read
TiDB Database Deployment and Operational Practices at AutoHome
DataFunSummit
DataFunSummit
Dec 8, 2022 · Databases

Understanding ClickHouse Distributed DDL Execution: Cases, Principles, and Mitigation Guide

This article analyzes ClickHouse distributed DDL execution by presenting typical failure scenarios, dissecting the underlying Zookeeper‑based workflow, and offering practical mitigation steps to avoid DDL timeouts and improve cluster stability for large‑scale data operations.

Big DataClickHouseDatabase Operations
0 likes · 12 min read
Understanding ClickHouse Distributed DDL Execution: Cases, Principles, and Mitigation Guide
vivo Internet Technology
vivo Internet Technology
Nov 16, 2022 · Operations

Understanding and Mitigating Bigkey Issues in Redis Operations

Bigkeys—Redis values over 1 MB or structures with more than 2,000 elements—cause memory imbalance, command blocking, network overload, and migration failures, so DBAs must detect them using built‑in commands or RDB analysis, split or partition oversized keys, and tune migration settings to preserve performance and availability.

Database OperationsMonitoringPerformance
0 likes · 14 min read
Understanding and Mitigating Bigkey Issues in Redis Operations