Recent Dimensional Research data shows that 73% of surveyed enterprises have encountered Oracle‑initiated Java license audits, prompting 15% to complete migration, 22% to start, and 25% to plan moving to OpenJDK or other open‑source JDKs, driven by cost and compliance pressures.
The article analyzes the long‑standing issues of Go's original encoding/json package, explains the design and API of the experimental encoding/json/v2 and jsontext packages, and shows how the new implementation improves correctness, flexibility, and performance while preserving compatibility.
This tutorial walks through converting a SpringBoot + MybatisPlus application from MySQL to PostgreSQL, covering driver addition, JDBC configuration, schema differences, numerous SQL incompatibilities, transaction quirks, and provides helper scripts for bulk type changes and default timestamp settings, while highlighting practical solutions.
After Python 2’s end‑of‑life in 2020, this guide explains why developers should move to Python 3, outlines the historical evolution of Python 2, highlights performance and security advantages of Python 3, and provides practical migration steps and tools for upgrading projects on TencentOS Server 4.
An in‑depth comparison of Oracle JDK and OpenJDK covers their origins, licensing, feature sets, release cycles, performance benchmarks, security updates, and practical migration guides, helping developers choose the right JDK for production environments and avoid costly legal or stability pitfalls.
This article explains why Python 2 is no longer maintained, outlines the benefits of moving to Python 3—including security, performance, and modern library support—and provides practical step‑by‑step guidance for migrating projects on TencentOS Server 4.
This comprehensive guide compares Docker Swarm and Kubernetes across architecture, performance, and resource usage, outlines ideal use‑cases, provides detailed migration strategies with scripts and tools, and offers cost and operational analyses to help teams select the most suitable container orchestration platform.
This article details Qunar's transition to StarRocks as a unified OLAP engine, covering the business background, engine evaluation, architecture redesign, observability, high‑availability strategies, query‑performance optimizations, real‑world application cases, community contributions, and future plans.
This comprehensive guide walks you through Docker volume lifecycle management, covering creation, inspection, mounting, backup and restore, cross‑host migration, labeling, driver configuration, security controls, monitoring, best‑practice recommendations, automation scripts, and a quick‑reference cheat sheet for everyday operations.
SpringBoot 3.0 removed the traditional spring.factories file to improve startup performance, modularity, and GraalVM native image support, and introduces a new imports‑based registration mechanism with detailed migration steps, code examples, and best‑practice guidance for developers.
This article walks through switching a SpringBoot + MybatisPlus project from MySQL to PostgreSQL, detailing driver addition, JDBC changes, numerous SQL syntax pitfalls, and provides helper scripts for batch column type conversion and default timestamp settings.
This article explains what a bare Git repository is, why the git clone --mirror command creates one, details its internal directory structure, and shows how to use it for centralized sharing, reliable backups, and seamless repository migration.
This guide explains how to use the official 1panel‑migrator to upgrade a Linux server from 1Panel V1 to V2, covering prerequisites, installation of the migration binary, step‑by‑step service and website upgrades, important precautions, and post‑upgrade verification with example commands and logs.
SpringBoot 3.0 removes the long‑standing spring.factories file due to performance, modularity, and GraalVM native image challenges, introduces a new imports‑file mechanism, and provides detailed migration steps, code examples, performance comparisons, and best practices for GraalVM integration.
The article explains the purpose and historical popularity of the document.domain property for cross‑subdomain communication, details its deprecation across major browsers due to security and maintenance concerns, and provides practical migration strategies using postMessage, Channel Messaging API, and proper CORS configuration.
This article outlines the motivations, progress, and common issues encountered when upgrading over 100 Java applications to JDK 21, including deprecated APIs, module system constraints, Maven plugin incompatibilities, and GC choices, and provides concrete migration steps, configuration templates, and best‑practice recommendations for a smooth transition.
This article explains the removal of the spring.factories file in Spring Boot 3, the performance and modularity reasons behind it, introduces the new imports‑based mechanism, provides step‑by‑step migration guidance, and shows how the change improves GraalVM native image support.
This article walks through the full process of designing, configuring, and implementing a sharding solution for large loan and repayment tables using ShardingSphere, Spring Boot 3, MySQL, and MyBatis‑Plus, covering schema planning, data migration, DBA coordination, code examples, common pitfalls, and operational considerations.
This article lists the PHP functions that have been deprecated or removed in PHP 8, explains the security and performance risks of continuing to use them, and provides modern alternatives such as closures, foreach loops, PDO/MySQLi, preg_* functions, and OpenSSL.
SpringBoot 3.0 eliminates the long‑standing spring.factories file due to startup performance penalties, lack of modular support, static configuration limits, and incompatibility with GraalVM native images, and replaces it with a set of imports files that provide clearer, faster, and more modular auto‑configuration registration.
Notion tackled severe PostgreSQL performance limits by sharding its Block table and related tables across 480 logical shards on 32 physical databases, using workspace IDs as shard keys, a dual‑write migration, and rigorous validation to achieve near‑zero downtime and faster response times.
The article compares cloud‑native and traditional architectures, explaining how microservices, containers, and DevOps enable greater flexibility, scalability, resource efficiency, fault tolerance, and faster market response, while outlining migration best practices for enterprises transitioning to the cloud.
This guide announces the release of mica-mqtt 2.4.x, details the Maven groupId and package name changes, provides a full changelog, migration steps with code examples, and links to documentation and open‑source repositories, helping developers upgrade their MQTT solutions efficiently.
This article explains why monolithic applications become problematic as they scale, outlines the key advantages of microservice architectures, provides a step‑by‑step migration guide—including planning, service boundary definition, infrastructure setup, data decoupling, and communication—and illustrates the process with a fintech company case study.
On June 30, 2026, Akamai will shut down its CDN operations in China, directing remaining traffic to neighboring countries while offering migration paths through Tencent Cloud and Wangsu, and the article explains CDN fundamentals, China’s network landscape, Akamai’s history, and community reactions to the change.
Akamai will cease its CDN services in China on June 30, 2026, partnering with Tencent Cloud and Wangsu for migration, while industry experts discuss the technical challenges, geopolitical factors, and the impact on regulated and non‑regulated sectors.
Akamai will cease its CDN services in China on June 30 2026, offering migration partners like Tencent while explaining CDN fundamentals, benefits, components, and key terminology such as CNAME records, intelligent DNS, and origin protocols for readers planning a smooth transition.
This article details how Instagram migrated its massive Python 2/Django codebase to Python 3, covering the motivations, custom Django extensions, migration strategy, technical pitfalls such as Unicode handling, pickle compatibility, iterator behavior, and the resulting CPU and memory improvements.
GitLab announced that it will discontinue GitLab.com accounts for users in mainland China, Hong Kong, and Macau, offering a 60‑day migration window to the locally‑operated JiHu platform, sparking concerns about data integrity, compliance motives, and the broader impact on the Chinese open‑source ecosystem.
Spring Boot 3.4 introduces extensive updates—including RestClient and RestTemplate auto‑configuration, revised HTTP client factories, refined bean validation, graceful shutdown defaults, a new Paketo tiny builder for OCI images, deprecations, and numerous configuration and observability enhancements—providing developers with a comprehensive guide to upgrade and leverage the latest features.
GitLab announced that it will cease providing GitLab.com accounts to users in mainland China, Macau and Hong Kong, offering a 60‑day migration window to the locally‑operated JiHu platform and prompting widespread discussion about data integrity, compliance, and the future of open‑source development in the region.
GitLab.com will stop service for China regions, and Alibaba Cloud Codeup offers both a three‑click web import and a CLI tool for bulk migration, providing detailed steps, configuration examples, and AI‑enhanced code management to ensure a smooth transition of your code assets.
The article announces the rebranding of EasyExcel‑Plus to FastExcel, outlines its high‑performance features, provides migration instructions and code samples for Maven and Gradle, and additionally promotes a ChatGPT community and related services.
This case study details how Hangzhou MingShitang migrated its entire online‑education platform from self‑hosted IDC infrastructure to Alibaba Cloud, redesigning registration, configuration, micro‑service governance, safe release and gateway layers with MSE, Sentinel and cloud‑native technologies to attain 100% SLA, dramatically cut costs and boost performance.
This article walks through the practical steps for migrating a Vue2 project to Vue3, covering script‑setup syntax, composition‑API patterns, removal of mixins and global variables, file‑naming conventions, and reusable composable functions to achieve a cleaner, more maintainable codebase.
This comprehensive guide explores Spring Boot 3.4’s performance boosts, enhanced observability, and developer experience improvements, detailing major changes such as RestClient/RestTemplate auto‑configuration, bean validation updates, graceful shutdown, structured logging formats, observability enhancements, dependency upgrades, testing enhancements, and deprecated feature handling, with practical code snippets.
By rewriting the “得物商家客服” client’s backend in Rust and swapping Electron’s Chromium renderer for Tauri’s native WebView, the team cut binary size by 91%, halved memory use, reduced CPU load, improved startup, and documented challenges such as WebView2 installation, notification callbacks, and limited Tauri documentation.
This article examines common PHP version compatibility challenges—including deprecated functions, changed defaults, framework incompatibilities, syntax alterations, and stricter error reporting—and provides a step‑by‑step guide with auditing, refactoring, framework updates, testing, environment setup, and tools to ensure smooth upgrades such as from PHP 7 to PHP 8.
This article explains how Alibaba Cloud ACK Backup Center simplifies Kubernetes disaster recovery and cross‑cluster migration by offering automated resource‑adjustment policies, detailed backup and restore workflows, and a step‑by‑step best‑practice example for migrating a stateful application with custom YAML configurations.
A recent Azul Systems survey reveals that over 80% of Oracle Java users are migrating to OpenJDK or commercially‑supported OpenJDK distributions to reduce costs, avoid licensing uncertainties, and gain more flexible, open‑source Java solutions, with most migrations completing within a year.
This article surveys the compatibility of major Chinese database products with Oracle, MySQL, PostgreSQL and other systems, covering compatibility targets, levels, assessment methods, migration tools, and specific feature support such as protocols, data types, character sets, SQL syntax, procedural languages, built‑in functions, system views, optimizer capabilities and security features.
This article walks through converting a SpringBoot + MybatisPlus application from MySQL to PostgreSQL, covering driver addition, JDBC URL changes, dozens of SQL syntax incompatibilities, custom conversion functions, and handy PostgreSQL scripts for bulk column type and default value updates.
This article explains when to use NOT NULL versus NULL in relational database schemas, covering required fields, optional columns, unknown‑state representation, foreign keys, performance impact, versioning, data analysis, migration, default values and JSON types, with concrete SQL examples and practical guidance.
This article explains why and how to migrate a large Vue 2 Webpack codebase to Vite, applying Simon Sinek's Golden Circle model to clarify motivation, method, and concrete steps, and demonstrates the resulting dramatic reduction in build time and bundle size.
The article examines GitHub’s transition from a monolithic Ruby on Rails architecture to a micro‑service model, outlines the strategic steps, highlights the technical and organizational challenges, and presents Warner’s advice on when and how to adopt microservices for companies of different sizes.
This guide explains why and how to replace the deprecated ereg_replace() with the modern preg_replace() in PHP, covering performance benefits, syntax differences, migration steps, advanced usage, and practical code examples to help developers update their code safely and efficiently.
This article explains how BPC, a PHP native compiler, can translate ThinkPHP8 code into C, outlines the required dependencies, details the migration of the OurBlog sample project, describes necessary code adjustments, and provides step‑by‑step instructions to compile and run the resulting binary.
Pinterest migrated its Partner Insights analytics from Druid to StarRocks, achieving a 50% reduction in p90 latency, a six‑fold cost‑performance improvement, and simplified data ingestion, illustrating the benefits of a modern MPP database for real‑time ad analytics.
A 2023 survey of 663 Java professionals reveals a sharp decline in Oracle Java's market share, with 86% planning or already migrating to OpenJDK alternatives due to cost, licensing uncertainty, audit risk, and a preference for open‑source solutions, while highlighting migration timelines, satisfaction, and emerging pricing models.
A recent Azul survey of 663 Java professionals shows that 86% of Oracle Java users are migrating to OpenJDK due to high costs, licensing uncertainty, audit risks, and a preference for open‑source alternatives, with most migrations completing within a year and delivering significant cost savings.
A market study reveals that rising Oracle Java subscription costs are driving many users to migrate to OpenJDK, and this guide explains the reasons behind the shift and provides step‑by‑step instructions for removing Oracle JDK and installing OpenJDK.
This article details a complete system refactoring project, describing the original monolithic bottlenecks, the design of a distributed architecture, database model reconstruction, phased migration, testing, and rollout strategies to achieve scalable, reliable backend services.
This article provides a practical deep‑dive into StarRocks and Apache Paimon, covering data‑lake fundamentals, the technical advantages of both platforms, performance gains over traditional engines, step‑by‑step migration strategies, deployment options on Alibaba Cloud EMR, and future roadmap plans.
The team refactored a high‑traffic Vue2 detail page to Vue3 using Clean Architecture, separating entities, use‑cases, adapters, and framework layers, while employing AST‑based tooling, comprehensive unit/E2E/visual tests, and a gray‑release strategy, resulting in reduced duplication, better test coverage, and a reusable migration pipeline.
The article explains that CentOS Linux 8 ceased updates at the end of 2021 and CentOS 7 will reach end‑of‑support on June 30, 2024, describes the shift to CentOS Stream, and outlines several alternative operating systems—including Rocky Linux, Ubuntu, RHEL, and domestic Chinese distributions—providing guidance for enterprises and developers on migration paths.
This article compares Flask and FastAPI, explains their core differences in speed, developer experience, and standards, and provides step‑by‑step migration instructions, code examples, configuration tips, and deployment strategies for building modern Python web APIs.
While MySQL INT and BIGINT auto‑increment columns usually suffice, this article explains their numeric limits, calculates how many records each can store over time (e.g., at 100 inserts per second), and provides practical steps to switch from INT to BIGINT safely.
This article details how a large‑scale Elasticsearch deployment was transformed from physical servers to a Kubernetes‑based, containerized architecture, addressing cost, scalability, API compatibility, security, observability, and multi‑cloud migration using the 极限网关 API gateway.
The article explains the design flaws of java.util.Date, why it is discouraged in modern Java development, and provides a step‑by‑step guide with code examples for replacing it with java.time classes such as Instant, LocalDateTime, LocalDate, LocalTime, and ZonedDateTime.
This article documents the author's practical migration from JDK 8 to JDK 11, covering motivations such as performance, compatibility, and industry trends, detailed upgrade steps, GC tuning, resolved issues, and showcases significant performance gains and new Java 11 language features with code examples.
This article documents a month‑long effort to replace Fastjson with Gson in Java projects, analyzing security vulnerabilities, comparing performance and features of Fastjson, Jackson and Gson, and providing detailed migration steps, code examples, and solutions to common issues such as date handling, SpringBoot integration, Swagger compatibility and numeric type conversion.
The OceanBase community offers a detailed, eight‑session DBA tutorial covering the platform’s architecture, deployment, migration, performance tuning, diagnostic tools, and ecosystem components, complemented by live streaming, hands‑on exercises, certification incentives, and real‑world user testimonials to help developers and DBAs master this distributed database.
The article explains the design flaws of java.util.Date, why it should be replaced, and provides a step‑by‑step guide with code examples for migrating to the modern java.time classes such as Instant, LocalDateTime, LocalDate, and ZonedDateTime in Java backend projects.
Alibaba Cloud Log Service (SLS) offers a serverless, high‑availability, low‑cost alternative to self‑built ELK stacks, providing comparable Elasticsearch and Kafka compatibility, superior storage, query, and alerting capabilities, and streamlined migration paths, making it a compelling choice for large‑scale observability workloads.
The article explains the design flaws of java.util.Date, such as mutability, misleading naming, and timezone issues, and provides a step‑by‑step guide to replace it and related APIs with java.time classes like Instant, LocalDateTime, and ZonedDateTime, including code examples.
This article explains the challenges of migrating legacy Vue applications to a unified React stack, focusing on external link redirection, route parameter handling, and unified routing conventions, and provides a concrete implementation using Nginx, path-to-regexp, and a custom Redirector class.
iQIYI migrated hundreds of petabytes of Hive tables to Apache Iceberg using dual‑write, in‑place, and CTAS strategies, combined with partition pruning, Bloom filters, and Trino/Alluxio optimizations, achieving up to 40% lower query latency, simplified pipelines, and faster, cost‑effective data lake operations.
This article explains the key changes when upgrading to Spring Boot 3, covering URL matching deprecation, HTTP header size configuration, removal of Apache HttpClient support, Actuator endpoint sanitization, and various property and dependency updates for a smooth migration.
This article details Kuaishou’s five‑year evolution of Flink, covering its background, production refactoring to Kubernetes, migration practices, and future improvements, highlighting architecture layers, resource management, observability, and testing strategies for large‑scale stream processing.
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.
This article walks through Laravel's full‑stack design, showcasing Artisan commands, model generation, migrations, Eloquent relationships, routing, testing, and core container mechanics while highlighting practical code examples and the trade‑offs that make Laravel both powerful and occasionally heavyweight.
This article explains how to locate, trace, and resolve a syntax error that occurs when a stored procedure migrated from Oracle to OceanBase fails, detailing the use of trace IDs, SQL reconstruction, cursor analysis, and the necessary adjustments to primary‑key handling.
This article explains how combining Spring Boot 2.7 with JDK 17 can improve Java application performance, outlines the new language and runtime features, details migration challenges, provides configuration and code examples, and shares practical deployment guidance for cloud‑native environments.
This article explains why upgrading from JDK8 or JDK11 to the long‑term support JDK17 brings significant garbage‑collector performance improvements, new language features, and better framework compatibility, and provides detailed migration steps, Maven and SpringBoot configuration changes, and troubleshooting tips.
PHP 8 introduces named parameters, allowing developers to pass arguments by name instead of position, which improves code readability, reduces errors, simplifies version migration, and enables more self‑documenting function calls, as demonstrated with several HTTP request examples and array‑handling snippets.
Facing growing task volumes and diverse workload types, we upgraded our data development platform's scheduling engine to Apache DolphinScheduler, detailing the migration process, architectural enhancements, stability and observability improvements, multi‑tenant support, and the resulting performance gains and future roadmap.
This article details a comprehensive system refactoring project that transformed a monolithic, all‑in‑one architecture into a distributed, micro‑service‑based design with a completely rebuilt database model, covering problem analysis, solution design, phased implementation, testing, and rollout strategies.
This article walks through the painful migration from Apache HttpClient 4.x to 5.3, detailing modular design, customization, HTTP/2 support, connection management, API changes such as retry strategy, request/response configuration, interceptors, async client, and provides concrete Maven snippets and code comparisons to help developers evaluate whether the upgrade is worthwhile.
Kubernetes 1.24 officially deprecated Dockershim in favor of containerd, explaining the reasons, the underlying container runtime components, the changes in pod creation workflow, the impact on users and operators, and providing practical migration steps and best‑practice recommendations.
This guide explains why Spring Boot 2.7 is the optimal bridge to JDK 17, details the new language and performance features, provides step‑by‑step deployment and configuration instructions for JD Cloud, and shares practical compatibility fixes and IDE tips for a smooth migration.
The article examines the rapid growth of domestic databases in China’s banking sector, identifies eight critical pain points—from product stability and resource consumption to tooling gaps and migration difficulties—and offers detailed countermeasures covering version upgrade planning, resource optimization, functional testing, skill development, monitoring, ecosystem building, data migration, and backup‑recovery improvements.
This article provides a thorough analysis of upgrading Java applications from JDK 8 to JDK 11, covering performance improvements, garbage collector comparisons, new language features, module system changes, practical migration steps, common pitfalls, and best‑practice recommendations for enterprise backend development.
The article explains the recent SaaS policy change that limits free GitLab usage to 90 days, outlines the steps to export personal access tokens and import projects from JihuLab.com to GitLab.com, and confirms that the migrated repositories retain full history and issue data.
This article explains how to migrate a 240 GB MongoDB replica set by performing a full backup with oplog, extracting the incremental oplog timestamp, and then applying incremental backup and restore scripts to minimize downtime, while providing detailed shell commands and precautionary tips.
This article explains how DataWind’s frontend team replaced the outdated Dva‑based data flow with a new Redux‑plus‑hook solution called HookStore, detailing the pain points of complex initialization, legacy async syntax, tight module coupling, and showing migration steps, code examples, and benefits such as multi‑instance support and OpenAPI decoupling.
This article explains why upgrading from JDK 8 to JDK 11 is worthwhile, details performance gains, new language and API features, garbage‑collector improvements, modularization concepts, step‑by‑step migration procedures, common pitfalls, and practical verification methods.
This article presents Kuaishou's comprehensive journey of adopting Flink on Kubernetes, covering its background, evolution, architecture, production migration, observability, testing, and future plans, and demonstrates how large‑scale streaming workloads are transformed to a cloud‑native environment.
This article demonstrates two practical approaches for handling MySQL auto‑increment columns during migration to OB Oracle—creating custom sequences with DBCAT and using the GENERATED BY DEFAULT AS IDENTITY attribute—provides step‑by‑step commands, scripts, and validation results to help DBA engineers achieve seamless primary‑key migration.
This article explains why upgrading from JDK 8 to JDK 11 is beneficial, details performance improvements—especially GC behavior—lists the new language and API features, provides step‑by‑step migration guidance, highlights common pitfalls such as module‑system issues, and offers practical recommendations for production environments.
Kubernetes is moving its Debian and RPM package repositories to the community‑owned pkgs.k8s.io domain, deprecating the old apt.kubernetes.io and yum.kubernetes.io sources, and the article explains the timeline, impact on end users and distributors, and step‑by‑step migration guidance.
With MySQL 5.7 reaching end‑of‑life, this guide explains why you should upgrade to MySQL 8.0, outlines the new SQL capabilities and tools, and compares migration options including DBaaS and switching to PostgreSQL, helping you choose the best path for your workloads.
Facing massive daily query loads, Wanwu Newborn’s Watcher reporting platform migrated from MySQL, Greenplum, and Trino to StarRocks, cutting compute nodes by half while achieving 3‑10× faster query performance, higher success rates, and lower cost, as demonstrated by TPC‑DS and real‑world business query benchmarks.
This article details Tubi's comprehensive migration from Enzyme to React Testing Library, covering the motivations, testing philosophy shifts, custom codemods, lint enforcement, progress tracking scripts, implementation examples, and the overall cost, timeline, and lessons learned from converting over 440 test files and 100k lines of code.
Bilibili redesigned its fragmented account system into a unified, multi-tenant architecture using DDD and a four-layer design, consolidating all business lines into one codebase with configurable data isolation, logic, and dependencies, split into four micro-services, and migrated safely via gray-release and bidirectional sync.
New Relic’s 2023 Java Ecosystem Report reveals rapid adoption of Java 17, a steady dominance of Java 11, a shift toward cloud‑native deployments, and strong developer interest in full‑stack and modern frameworks, highlighting the ongoing transformation of enterprise Java.
Upgrading from Python 3.7 is essential because the version reaches end‑of‑life in June 2023, losing security fixes and third‑party library support, so developers must plan a migration to newer, maintained releases to keep applications safe and functional.
This talk outlines the strategic shift toward domestic, high‑performance databases, comparing shared‑everything, shared‑nothing, and shared‑storage architectures, and presents a seven‑step migration framework—including selection, testing, full and incremental sync, application refactoring, dual‑write or middleware switching, and post‑migration observability—to achieve seamless, low‑impact migration of massive, high‑concurrency workloads.
At Sentry, the team documented a year‑and‑four‑month effort to replace Enzyme with React Testing Library across thousands of tests, detailing the motivations, migration strategy, performance challenges, tooling changes, and the eventual benefits such as improved accessibility, reduced reliance on React internals, and a more maintainable test suite.
When upgrading MySQL 5.7 tables that use utf8 or utf8mb3 to MySQL 8.0, mismatched character sets and collations can cause index loss and inefficient joins, but converting all tables to utf8mb4 and adjusting the driver table can restore optimal query performance, as demonstrated with detailed examples and profiling results.
Facing chaotic usage, maintenance challenges, partition tolerance issues, and performance bottlenecks with RabbitMQ, our middleware team decided to fully migrate to Kafka, outlining reasons, comparative models, migration strategies, and verification steps to ensure a smooth, high‑availability, high‑performance transition.
