The article analyzes the growing limitations of tape backup, outlines a step‑by‑step migration to disk‑based backup using deduplication, compression and modern storage technologies, and explains how this transition improves reliability, cost efficiency and recovery speed for enterprises.
This guide explains what etcd is, how to prepare a Kubernetes environment, start single‑node or multi‑node clusters, secure communication with TLS, replace failed members, perform built‑in and volume backups, scale the cluster, recover from snapshots, upgrade to etcd 3, and avoid known client‑balancer bugs.
This guide demonstrates how to recover MySQL 5.7 data after an accidental UPDATE by extracting row‑based binlog entries, converting them into executable SQL statements, and applying those statements to restore the original table contents.
This article explains several reliable techniques for renaming a MySQL database—including full export/import with mysqldump, bulk table‑rename operations, and legacy binlog‑based approaches—while providing concrete command‑line examples, performance measurements, and step‑by‑step instructions for each method.
This article provides a detailed introduction to disaster recovery, covering backup concepts, continuous data protection, high‑availability and disaster‑recovery architectures, key metrics such as RTO and RPO, and the three levels of disaster‑recovery solutions from data to business continuity.
This article provides a comprehensive overview of storage fundamentals, covering RAID configurations, COW/ROW snapshot mechanisms, backup strategies, continuous data protection (CDP), clustering concepts, and virtual tape library (VTL) technologies, offering essential knowledge for IT professionals and system architects.
This article explains the importance of database backup and details MySQL Enterprise Backup (MEB) features—Backup Lock, Redo Log Archiving, and Page Tracking—along with usage commands, performance considerations, and comparisons to xtrabackup for MySQL 8.0 environments.
This article analyzes a MySQL master‑slave instance with a massive arrival_record table, identifies slow‑query causes using pt‑query‑digest and tcpdump, proposes index redesign, demonstrates backup/restore with mydumper, compares online DDL and pt‑osc, and presents batch‑delete strategies that dramatically reduce SLA‑triggering latency.
This guide explains how to achieve MySQL high availability and scalability through full and incremental backups, binlog-based point‑in‑time recovery, and both asynchronous and synchronous replication, while highlighting trade‑offs, best practices, and practical command examples.
This article examines recent database deletion incidents and offers DBA‑level guidance on strengthening processes, technical safeguards, and security policies, covering backup‑restore design, performance optimization, high‑availability strategies, and self‑service automation to avoid future data loss.
This article provides concise answers to common MySQL questions covering default ports, regular expression usage, index limits, query examples for retrieving rows, date functions, savepoints, ENUM types, storage engines, connection functions, ACLs, and other essential database concepts.
This article explains what disaster recovery (容灾) is, distinguishes it from backup, outlines their classifications, compares key differences, and describes various disaster‑recovery and backup levels to help organizations design resilient data‑center solutions.
This guide walks you through deploying a low‑cost, private Bitwarden password manager on Tencent Cloud by preparing a domain and SSL certificate, installing Docker on a CentOS CVM, running Bitwarden and Nginx containers, optionally enabling CDN, configuring backups to COS, and applying security hardening such as two‑factor authentication.
Senior DBA Yang Jianrong shares how standardized processes, robust security, and modern optimization—such as partitioning, middleware, and NoSQL—combined with high‑availability designs and self‑service tools like automated slow‑log analysis can streamline large‑scale MySQL operations, migrations, and continuous DBA learning.
The article explains the evolution and principles of virtualization backup technologies, detailing VMware's VADP API with its SAN, Hot‑add, and NBD modes, Hyper‑V's VSS‑based backup approach, and Citrix XenServer's backup API, while comparing their architectures and use‑cases.
The article examines the critical challenges of operational security in internet companies, proposes a “nuclear button” permission‑minimization framework, and outlines practical automation solutions such as bastion hosts, Ansible task control, and backup management to balance safety, cost, and efficiency.
This article provides a comprehensive overview of backup technologies, comparing Host, LAN, LAN-free, Server-free, and Server-less methods, reviews major backup software from EMC, Symantec, Commvault, and IBM, and explains NDMP protocols and NAS backup architectures.
A detailed reference covering MySQL service management, connection commands, database and table operations, data types, indexes, joins, subqueries, transactions, backup, user privileges, and common SQL functions, complete with practical code examples.
This guide shares practical Linux server operation rules, emphasizing thorough testing, careful use of destructive commands, strict access control, regular backups, security hardening, continuous monitoring, and disciplined performance tuning to prevent costly outages and data loss.
This article explains disaster recovery concepts, distinguishes it from backup, outlines data‑level, application‑level, and business‑level DR classifications, and details the four DR tiers with their advantages, disadvantages, and typical implementation considerations.
This article explains a MySQL replication experiment where a master is restored from an outdated backup, leading to missing GTID transactions due to server_id filtering, and provides analysis and solutions such as changing server_id or enabling replicate-same-server-id to prevent data loss.
This article provides a comprehensive overview of backup technologies, describing the evolution of backup architectures such as Host, LAN, LAN‑free, Server‑free, and Server‑less, and analyzes the features, advantages, and drawbacks of leading enterprise backup software solutions.
This article explains disaster tolerance, fault tolerance, and disaster recovery, compares them with backup, discusses RTO/RPO metrics, outlines disaster types, and presents common disaster‑recovery architectures and planning considerations for enterprise IT operations.
This article analyses why the GTID information recorded by Xtrabackup’s xtrabackup_binlog_info file can differ from the GTID shown by SHOW MASTER STATUS after a restore, comparing the behavior of Xtrabackup 2.4 on MySQL 5.7 and Xtrabackup 8.0 on MySQL 8.0, and explains the underlying backup processes and MySQL internals that cause the discrepancy.
This article examines the key differences between Commvault and Veritas NetBackup, evaluating their features, cloud integration, endpoint support, cost, and suitability for small versus large enterprises to help organizations choose the most appropriate backup and disaster recovery solution.
This article explains why data security is vital for businesses, outlines common technical, process and human threats, and provides actionable cloud‑based measures—including backup strategies, snapshot usage, permission management, data classification, and encryption—to protect enterprise data throughout its lifecycle.
The article analyzes the recent Weimeng database deletion incident, explains why recovery took 36 hours, and provides practical guidance on backup practices, minimal‑privilege management, and cloud‑based disaster recovery to prevent similar data loss in small and large organizations.
A Chinese SaaS provider suffered a catastrophic data loss when a core operations employee maliciously deleted its production databases, prompting emergency repairs, police involvement, and a multi‑day recovery effort that exposed critical gaps in permission management and backup strategies.
This article compares key new features of MySQL 8.0 and MariaDB 10.4—including authentication plugin changes, Unix‑socket auth, atomic DDL, instant column adds, clone plugin usage, optimizer enhancements, resource groups, query‑rewrite, and backup tools—providing step‑by‑step commands, code snippets, and practical caveats for database upgrades.
This article explains disaster recovery and backup concepts, their distinctions, various classifications—including data‑level, application‑level, and business‑level approaches—and outlines backup tiers from local tape to active‑active data centers, providing practical guidance for building resilient IT infrastructures.
This article shares hard‑earned operational guidelines—ranging from cautious command usage and backup habits to security hardening, monitoring, performance tuning, and the right mindset—to help engineers prevent costly incidents and keep production systems stable and secure.
The article explores how Alipay’s financial data is protected through multi‑site data centers, hot and cold backups, and disaster‑recovery mechanisms, explaining why destroying a single server—or even multiple facilities—won’t instantly erase users’ funds, and outlining the lengths required to truly cripple the system.
This guide explains how to install Jenkins in Docker, back up its configuration by saving the Docker image, map host directories for backups, and upload the resulting image to an Artifactory Docker registry for secure storage and easy restoration.
The article explains MySQL logical and physical backup methods, compares online and offline backup approaches, details the advantages and disadvantages of each, and provides practical mysqldump commands and master‑slave backup techniques for reliable database protection.
The article examines Alipay’s data‑center architecture, redundancy schemes, backup strategies, power‑supply design, fire‑suppression systems and physical security measures, illustrating why destroying its storage is far more complex than simply “blowing up” a server.
The article explains how Alipay’s financial system uses multi‑site, multi‑center architectures, hot‑standby, active‑active, and cold‑backup strategies, along with stringent A‑class data‑center standards, to ensure that even catastrophic physical attacks cannot erase users' money.
This guide outlines step‑by‑step methods for migrating a production Redis cluster—including using Redis’s native RDB/AOF backups, JSON‑based redis‑dump, the Alibaba‑maintained RedisShake tool, and Docker‑based cluster setups—ensuring data integrity and minimal downtime during the transition.
This article explains InfluxDB's built‑in monitoring system, internal measurements, useful commands, HTTP endpoints, and provides detailed instructions for performing full backups and restores, including configuration tweaks, command syntax, and important considerations about formats and data ranges.
This article explains the MySQL Clone plugin introduced in version 8.0.17, describes its underlying mechanism, installation and execution steps, outlines usage constraints and scenarios, and presents a detailed performance comparison with LVM snapshots and Xtrabackup under various workloads.
This comprehensive guide explains Galera‑based Percona XtraDB Cluster architecture, high‑availability mechanisms, state‑transfer methods, flow‑control, deployment patterns, routine inspection, monitoring variables, backup management, common failure scenarios, and real‑world case studies for MySQL clusters.
This article provides a comprehensive guide to MySQL InnoDB tablespace encryption, covering its architecture, supported plugins, configuration steps, key rotation, limitations, encrypted table operations, import/export procedures, and backup/restore methods using mysqlbackup and innobackupex.
This article explains the definitions of disaster tolerance, fault tolerance, and disaster recovery, compares their purposes, discusses backup versus disaster‑tolerance solutions, outlines key metrics such as RTO and RPO, and presents common architectural and investment considerations for building resilient enterprise systems.
This article explains how the apply‑log‑only option in Percona XtraBackup affects MySQL restoration, illustrates the risk of data inconsistency when the option is omitted, and provides guidance on correctly using the parameter during full and incremental backup recovery to ensure complete transaction replay.
This guide explains how to configure rsync as a remote backup server on Linux, covering installation, configuration files, user authentication, service management, command options, and scheduling automated backups with cron for reliable and efficient data protection.
An in‑depth exploration of Oracle 12c’s multitenant architecture explains key concepts, analyzes a real‑world backup failure, and provides a comprehensive, step‑by‑step RMAN procedure—including control file handling, datafile restoration, and selective tablespace skipping—to reliably recover pluggable databases.
Effective MySQL backup and disaster recovery are essential for protecting critical business data; this guide explains backup types, tools like Percona XtraBackup, scheduling, local and remote strategies, incremental processes, preparation and restoration steps, and introduces a platform for automated backup management.
This article explains CB‑SQL's two backup approaches—logical (using DUMP and IMPORT) and physical (using BACKUP and RESTORE)—detailing their mechanisms, supported formats, storage options, performance characteristics, and how they ensure reliable data recovery for large‑scale distributed databases.
This guide explains why Linux dominates modern IT, then walks through fourteen practical hardening measures—including physical security, updates, minimal installations, login restrictions, user and file management, firewall configuration, package handling, disabling Ctrl‑Alt‑Del, monitoring, log centralization, backups, security tools, and management policies—to build a robust and attack‑resistant Linux server.
The article analyzes the evolution of data protection—from manual copies and scripts to snapshots and Continuous Data Protection (CDP)—explaining CDP's technical principles, implementation models, advantages over traditional backup, and how Copy Data Management (CDM) complements modern storage strategies in large‑scale enterprises.
Snapshot technology creates point‑in‑time copies of files, directories or volumes, addressing common backup issues such as large data volumes, write‑in‑progress files, performance impact, and consistency, while offering various implementations—from file‑system and LVM to NAS, hypervisors, and databases—each with distinct advantages and trade‑offs.
This article demonstrates how to install and verify the MySQL 8.0.17 clone plugin, create privileged clone users on both donor and recipient servers, configure cloning parameters, execute a full instance clone, set up replication with CHANGE MASTER, and discusses the plugin's limitations such as InnoDB‑only support and DDL restrictions.
This article explains OpenStack Trove’s role as a Database-as-a-Service platform, outlines its core components, and details QiYun’s custom enhancements—including automated backup, monitoring, and a streamlined single-API master-slave instance creation with isolated networks and VIP-based failover for improved security and availability.
This article provides a comprehensive tutorial on MySQL 8.0's Clone Plugin, covering its concepts, local and remote cloning procedures, required permissions, configuration steps, monitoring queries, and a detailed comparison with XtraBackup for fast data replication and recovery.
This guide provides step‑by‑step Oracle commands for creating and dropping databases, performing full and selective backups, restoring data locally or remotely, managing tables—including creation, deletion, renaming, column alterations, primary keys, indexes, and views—as well as querying, inserting, updating, deleting, and copying data efficiently.
A developer recounts how a misconfigured production environment led to the accidental deletion of both content and user databases, the frantic scramble to diagnose the issue, the discovery of a backup oversight, and the hard‑earned lessons on backups, testing, and authentication security.
This guide explains ETCD’s high‑availability architecture and provides detailed step‑by‑step recovery procedures for single‑node failures, majority‑node outages, and database‑space‑exceeded errors, including status checks, member removal and addition, snapshot restoration, compaction, defragmentation, and alarm clearing.
This guide explains why backing up WeChat public account articles is essential and provides a Python solution that captures article content, fixes image URLs, and generates PDF files—either one per article or a combined document—complete with code examples and usage tips.
Discover a concise guide to essential backup solutions—including Git version control, Rsync command-line syncing, Dropbox cloud storage, and macOS Time Machine—explaining their core features, practical usage, and how they collectively safeguard your files, code, and system data.
This guide reviews four practical backup solutions—Git for versioned file control, Rsync for command‑line incremental syncing, Dropbox for cloud‑based GUI storage, and macOS Time Machine for full system snapshots—explaining their key features, typical use cases, and basic setup steps.
This article explains MySQL backup classifications, then details XtraBackup's hot physical backup workflow—including redo‑log handling, global read‑lock usage, step‑by‑step file copying, and restore procedures—while addressing common FAQs and practical tips for ensuring data consistency.
When a MySQL server contains many databases but you only need to recover one database or a single table, you can extract the relevant CREATE and INSERT statements from a full mysqldump using sed or grep, then import them, avoiding a costly full‑instance restore.
After his father's PC was infected by the GANDCRAB ransomware, the author recounts the alarming symptoms, explains how ransomware works, explores the role of the dark web and DASH cryptocurrency in ransom demands, and shares practical backup methods—from simple USB copies to the 3‑2‑1 principle—to protect personal data.
This article outlines comprehensive IT operations practices, covering methods, documentation, process flows, essential technical skills, monitoring strategies, backup solutions, and the overall value of operations in supporting business objectives.
This article curates a comprehensive list of technical resources covering backup system architectures, distributed technology designs, cloud computing frameworks, high‑performance computing, storage solutions, server virtualization, networking, big data, databases and AI, providing readers with links to in‑depth analyses and best‑practice guides.
This tutorial walks you through installing the Spatie Laravel‑Backup package, configuring email notifications, setting filename prefixes, limiting storage usage, enabling compression, monitoring backups, and automating the process with cron to protect your Laravel application from data loss.
This article explains data protection concepts—including file‑level and block‑level backup, remote file copy and remote volume imaging, snapshot mechanisms such as CoFW and RoFW, and clone technologies—while discussing their advantages, drawbacks, and practical backup architectures.
This guide explains why database backups are essential, outlines storage media options, and provides step‑by‑step instructions—including creating a backup directory, writing a Bash script, setting executable permissions, and scheduling the job with crontab—to reliably automate MySQL backups on a Linux server.
The talk by Tencent’s senior MySQL engineer explains high‑availability concepts—99.95% uptime, RPO/RTO metrics, backup methods, and replication modes—while comparing single‑node, shared‑storage, and share‑nothing architectures, detailing failover tools (Keepalived, MMM, MHA), cluster solutions (PXC, MGC, Group Replication) and NewSQL examples such as Aurora, PolarDB and CynosDB.
Microsoft's Volume Shadow Service (VSS) is a backup and recovery framework that creates consistent point-in-time snapshots by coordinating requestors, writers, and providers, supporting fast data backup, file-level restores, and various storage scenarios through full and copy-on-write snapshot methods.
The article provides a comprehensive overview of the Network Data Management Protocol (NDMP), explaining its architecture, core concepts, backup mechanisms, version differences, supported backup software, and various network topologies such as 2‑way, 3‑way, and remote configurations for efficient NAS data protection.
This article offers eight practical operations‑team strategies—inspection, monitoring alerts, capacity planning, network restrictions, risk pre‑plans, data backup, on‑call mechanisms, and staying connected—to ensure system stability and enjoy the Golden Week holiday without incidents.
This comprehensive guide walks you through mastering MySQL by covering server configuration choices, storage engine selection, data type recommendations, index strategies, backup methods, logging options, and practical advice on triggers, views, stored procedures, and character set handling, all aimed at boosting performance and avoiding common mistakes.
This article explores the multifaceted role of IT operations, emphasizing how automation, documentation, processes, monitoring, and backup strategies create business value, and shares practical insights from over ten years of experience to help professionals elevate their operational impact.
The article details JD.com's Database Technology Department's development of an intelligent operations platform, automated deployment, monitoring, fault self‑healing, backup/recovery systems, and the ContainerDB elastic MySQL service, highlighting architectural designs, key components, and future directions for smarter, faster, and more cost‑effective database management.
This tutorial walks you through creating a dedicated git user, configuring a bare repository, setting up SSH key authentication, installing GitLab on CentOS 7, managing groups and permissions, and performing backup and restore operations, all with concrete command examples and screenshots.
This article walks through diagnosing a MySQL crash, using innodb_force_recovery to start the server, exporting the data with mysqldump, handling charset mismatches, importing into a new instance, and restoring normal operation while offering best‑practice backup recommendations.
This guide explains three practical ways to track SQL Server backup and restore operations—using SSMS UI, T‑SQL with the STATS option, and dynamic management views—plus how to retrieve backup history and avoid common pitfalls.
This article examines common hardware and network failures in data centers, analyzes real‑world outage cases, classifies fault domains, and presents comprehensive strategies for database fault handling—including logging, checkpointing, backup, replication, and high‑availability architectures—to improve reliability and reduce downtime.
A developer recounts a terrifying production database loss, explores how a misconfigured environment caused the outage, highlights the critical role of backups, and shares hard‑earned lessons about authentication token handling and preventing similar catastrophes in future projects.
The article details Veritas Velocity’s hybrid‑cloud data replica solution, its architecture, deployment steps, role‑based access, workflow automation with Oracle RMAN, and performance benchmarks that show up to 8.8× faster test‑environment provisioning while halving required manpower.
Data Copy Management (CDM) is a storage‑efficiency technology that reduces redundant data copies through block‑level snapshots and virtualization, improving performance, compliance, and cost while complementing but not replacing traditional backup solutions, with a growing market and diverse vendor offerings.
This article explains Redis's two persistence methods—RDB snapshots and AOF append‑only logs—including their operation, configuration options, advantages, disadvantages, and guidance on choosing the appropriate strategy for data durability and recovery.
The article examines how Continuous Data Protection (CDP) transforms traditional backup and disaster‑recovery approaches by offering near‑real‑time recovery points, finer granularity, and flexible implementation models across applications, files, and storage blocks, while comparing its benefits and trade‑offs with conventional methods.
When accidental deletion removes files from the /data/webapps/.../upload directory, this guide shows how to install extundelete, locate the relevant inodes, and safely recover the lost data using read‑only mounts and specific restore commands.
This guide answers common Oracle backup questions, covering planning for 50‑TB databases, speed calculations, backup window design, RMAN versus Data Pump, multi‑user and RAC scenarios, catalog usage, performance troubleshooting, and practical SQL queries for monitoring backup status.
This comprehensive guide covers Oracle SQL tuning techniques, execution‑plan inspection, optimizer choices, high‑resource SQL detection, session tracing, index fundamentals, backup classifications, recovery procedures, system monitoring, and performance diagnostics, providing practical knowledge for DBA interviews and daily work.
This guide explains how to safely migrate a Zabbix monitoring server to a new machine by backing up the MySQL database with mysqldump, importing it on the new host, updating configuration files, restarting services, and ensuring time synchronization to maintain uninterrupted monitoring.
From Hearthstone’s dual‑database crash to Uber’s massive data breach, this 2017 Linux operations roundup chronicles twelve critical incidents—highlighting backup failures, Docker rebranding, ransomware, BGP hijacking, and more—offering key lessons for sysadmins and DevOps professionals.
This guide explains how to manually export and import MySQL databases using mysqldump and mysql commands, and provides a Bash script with crontab scheduling for automated daily backups, including necessary path adjustments and usage notes.
This article outlines ZanDB's approach to standardizing MySQL environments, implementing a real‑time backup monitoring system, and building a comprehensive automation platform that includes task scheduling, host and instance management, log handling, metadata tracking, and daily maintenance to streamline DBA operations.
This article explains how MongoDB’s security features—including access control, authentication, encryption, data discovery, retention policies, zone sharding, backup, monitoring, and audit logging—help organizations meet GDPR requirements while minimizing operational overhead and ensuring data sovereignty.
Oracle provides several powerful recovery mechanisms—logical backups with the import tool, physical file restoration with incomplete recovery, LogMiner analysis of redo logs, and Flashback Query—each illustrated through a scenario where a mistaken update to the TFUNDASSET table is corrected using step‑by‑step procedures and commands.
The article describes Qunar's 99.99% high‑availability goal for MySQL databases, outlines its HA designs (MMM, PXC, QMHA), compares hot and cold backup methods, discusses common backup challenges, and details Qunar's comprehensive backup and recovery solution including Percona XtraBackup, dedicated backup nodes, centralized management, and consistency verification.
This article explains the concept of Database-as-a-Service (DBaaS), introduces MongoDB’s core capabilities, outlines the essential components such as lifecycle management, disaster recovery, monitoring, and value‑added services, and provides practical guidance on building a production‑grade MongoDB DBaaS platform.
This article compiles a comprehensive set of MySQL interview questions covering replication mechanisms, differences between MyISAM and InnoDB, character type nuances, transaction logging, binlog formats, performance tuning, backup strategies, monitoring, consistency checks, and handling large datasets, providing concise answers for each topic.
This article details LeTV's diverse database landscape, explains the design and implementation of its private‑cloud RDS built on Docker and Percona XtraDB Cluster, outlines monitoring solutions such as Lepus, Prometheus and Open‑Falcon, and shares practical backup approaches and operational lessons learned.
This guide explains how to create a reliable MySQL backup solution by checking disk space, setting up a backup directory, writing a shell script for mysqldump (with optional compression), granting execution rights, scheduling the script with crontab, and verifying the job, while also covering crontab syntax and examples.
This guide explains why database backups are essential, walks through checking disk space, creating a backup directory, writing a Bash script to dump and compress MySQL data, granting execution rights, and scheduling the script with crontab to ensure reliable, automated backups.
This comprehensive guide shares a seasoned DBA's practical advice on environment awareness, hardware considerations, security, routine operations, architecture, and mindset to help database professionals avoid common pitfalls and improve reliability in MySQL production systems.
This article details Tongcheng Travel's extensive experience of running over a thousand MySQL instances in Docker, describing the motivations, architecture, resource scheduling, backup, monitoring, high‑availability, migration, and operational benefits of their private cloud database platform.
