Spring Boot 2.3.0 introduces upgraded core and third‑party dependencies, adds Java 14 support, enhances Docker image building, provides graceful shutdown and service‑availability probes, and includes numerous other improvements, with full release notes and extensive community contributions.
This article explains the distinction and relationship between cookies and sessions, describes how sessions work in web applications, and compares four approaches—client‑side storage, session replication, Nginx session affinity, and Redis‑based session storage—for achieving consistent distributed session management.
This tutorial walks you through converting a Spring Boot MyBatis integration from annotation‑based configuration to XML‑based mapper files, covering scanner setup, interface definition, XML mapper creation, property configuration, and a unit test to verify database read/write operations.
Facing pandemic-driven remote teaching, Alibaba’s live streaming team redesigned their media pipeline, combining CDN, custom real-time protocols, WebRTC, and cloud-native techniques to control transmission and playback buffers, achieving sub-300 ms host-to-host latency and under-600 ms host-to-viewer latency while maintaining smooth playback.
The Python Software Foundation secured $407,000 from Mozilla and the Chan Zuckerberg Initiative to fund pip’s 2020 development, outlining a three‑phase plan that includes core improvements, resolver work, and sustainability efforts to strengthen the Python packaging ecosystem.
The article explains Alibaba's Java Development Manual rules—covering logging APIs, collection initialization, foreach loop modifications, static SimpleDateFormat, string concatenation in loops, serialVersionUID handling, subList usage, inheritance, isSuccess naming, COUNT(*) versus COUNT(col), and thread‑pool creation—providing the rationale behind each prohibition for safer, more efficient backend Java code.
This tutorial explains why persisting a Spring Boot application's Process ID (PID) is useful, how to use the built‑in ApplicationPidFileWriter to write the PID to a file, and how to customize the file location via configuration properties.
This article explains the atypical Spring circular‑dependency problem, distinguishes strong and weak dependencies, shows how @Configuration classes turn weak dependencies into strong ones, analyzes bean‑initialisation order, and offers a concrete rule to avoid unresolvable circular references.
The article explains why Java’s anonymous inner classes enforce final or effectively‑final variables, shows how the compiler treats these classes, contrasts this behavior with Kotlin’s ability to modify primitive values inside anonymous classes, and illustrates the differences with decompiled bytecode examples.
This article explains how to achieve eventual consistency for cross‑service transactions in a distributed environment by using RocketMQ's transactional messages, detailing the underlying principles, message flow, implementation steps for producers and consumers, and important usage limitations.
This article compares various distributed unique identifier generation methods—including UUID, database auto‑increment, Redis INCR, Zookeeper, segmented DB caches, and the Snowflake algorithm—detailing their principles, advantages, drawbacks, and suitable use‑cases to help developers select the optimal solution for their systems.
This article compiles essential Laravel and PHP interview questions—covering PHP7 new features, Laravel service providers, IoC container, Facades, caching with Redis vs Memcached, database indexing, high‑concurrency strategies, and many other topics—providing concise answers and references for developers preparing for technical interviews.
This article explains how PHP code is compiled and executed by the Zend virtual machine, detailing the four compilation stages, the structure of opcodes and execution data, the different dispatch mechanisms, and the role of Opcache in improving performance.
This article surveys various distributed unique ID generation techniques—including Oracle auto‑increment, Redis batch allocation, UUID versions, Hibernate and MongoDB strategies, and Twitter’s Snowflake—explaining their structures, trade‑offs, and practical implementation considerations for reliable, collision‑free identifiers.
This tutorial walks through creating Word reports with dynamic charts by generating images with pychartdir, converting them to byte data, designing a Word XML template, and rendering it with Jinja2 to produce a final .doc file, complete with installation tips and code snippets.
This article examines how PHP's foreach construct consumes memory under different reference modes, explains the internal structure of PHP arrays, buckets, and zvals, and provides practical recommendations for choosing reference or value iteration to minimize memory usage.
This article explains how Ele.me grew from a student startup to handling over nine million daily orders by evolving its website architecture, adopting SOA, splitting services, implementing a robust release system, and building comprehensive monitoring and data‑access layers.
This article explains why and how to hack Node.js modules by manipulating the module cache, require.cache, or the require function itself, providing practical code examples and discussing related internals, pitfalls, and real‑world use cases.
This article explains the evolution of concurrent I/O in PHP—from traditional multi‑process and multi‑thread blocking models, through the leader‑follower pattern and I/O multiplexing with epoll, to modern asynchronous programming using the Reactor model, coroutines, and the high‑performance Swoole extension.
This article shares practical design principles for building scalable read services, covering stateless architecture, data closed‑loop processing, multi‑layer caching strategies, concurrency optimization, degradation switches, rate limiting, traffic switching, and other operational best practices.
This article reviews PHP7’s major language enhancements, architectural changes, and benchmark results that demonstrate up to a 60% speed increase and a 2.7‑fold QPS boost for WordPress, providing developers with practical insights into adopting the new version.
