A highly professional Java public account
The article compares PostgreSQL and MySQL, highlighting PostgreSQL's richer data types, true sequence support, powerful extensions, built‑in monitoring, advanced replication, open‑source licensing, and MVCC implementation, while acknowledging MySQL's strengths in quick deployment and read‑heavy workloads.
The article examines five scenarios where Spring's @Transactional annotation falls short—stock shortage, MQ messaging, batch processing, logging, and isolation/timeout settings—and demonstrates six practical techniques, including programmatic transactions, parameter tuning, transaction synchronizers, event listeners, manual transaction control, and propagation strategies, all backed by runnable demo code.
This article presents a complete Spring Boot 3 solution for multi‑dimensional network bandwidth throttling using a manually implemented token‑bucket algorithm, custom HandlerInterceptor, HttpServletResponseWrapper, and RateLimitedOutputStream, with detailed code samples, configuration options, and performance tuning guidance.
The article explains how MinIO's community edition removed its web console via a large PR, outlines the official push toward a commercial product, and provides a step‑by‑step guide to deploying the Rust‑based RustFS as an open‑source alternative with Docker Compose and Nginx HTTPS configuration, concluding with a feature comparison.
The article explains common pitfalls that cause Spring @Transactional to fail or not roll back, such as incorrect method visibility, final or static modifiers, internal method calls, beans not managed by Spring, multithreading, unsupported database engines, misconfigured propagation, swallowed exceptions, and improper rollback settings, and offers practical solutions for each case.
This article breaks down the architecture of a generic payment core system, covering the transaction and payment cores, service governance, data consistency, asynchronous processing, performance testing, and stability measures to help engineers build robust payment platforms.
The article walks through practical Linux commands—tail, less, grep, sed, and awk—showing how to efficiently monitor, search, filter, and extract information from large production logs using real‑world scenarios and exact command examples.
The article demonstrates how to combine Spring Boot 3, Caffeine local cache, and Redis into a three‑level cache pyramid, reducing API response time from 28 ms to 2 ms, cutting CPU usage by 35 %, and providing detailed configuration, code examples, performance benchmarks, and mitigation strategies for common high‑concurrency pitfalls.
The article analyzes the friction between XXL‑Job and Nacos in cloud‑native environments, proposes the JobFlow design that removes redundant registration and configuration, adds full‑traceability, true sharding with distributed locks, smart retries and cloud‑native configuration, and demonstrates how these changes improve consistency, observability and operational cost.
This article explains how to build a lightweight, production‑grade idempotency middleware for Spring Boot 3 using AOP, a custom @Idempotent annotation, SpEL‑generated keys, and Redis atomic operations, covering architecture, core components, code examples, use cases, and performance characteristics.
