Passionate about technology, though not great at solving problems; eager to share, never tire of learning!
This article explains how Kafka achieves extremely high throughput by using a Reactor‑based non‑blocking I/O model, zero‑copy data transfer, sequential disk writes, memory‑mapped files, sparse indexing, partition load‑balancing, compression, batch processing, and a lock‑free offset design.
This article provides a concise overview of the latest AI breakthroughs—including AIGC, multimodal technology, Retrieval‑Augmented Generation (RAG), intelligent agents with function‑calling models, and the Model Context Protocol (MCP)—explaining their principles, relationships, and practical implications for developers outside the AI field.
This article explains the MCP framework that standardizes AI tool invocation using JSON‑RPC, outlines its client‑server architecture, details communication methods such as STDIO, SSE and streamable HTTP, and provides a Spring AI demo showing tool registration, discovery, and execution.
This article explains Redis 6.0's multithreaded I/O feature, covering its background, configuration parameters, execution flow, source code analysis, performance benchmarking against single‑threaded mode, identified limitations, and a brief comparison with Valkey 8.0's advanced I/O design.
This article explores the inner workings of InnoDB's architecture—including the Buffer Pool, Change Buffer, Adaptive Hash Index, and Log Buffer—detailing their designs, configuration parameters, performance impacts, and best‑practice recommendations for high‑throughput MySQL deployments.
This article provides an in‑depth exploration of Java’s concurrent collection classes, covering the design and implementation of ConcurrentHashMap, ConcurrentLinkedQueue, and the seven blocking queue variants, complete with code analysis, performance considerations, and practical usage scenarios for high‑throughput multithreaded applications.
This article explains the difference between strong and weak consistency, explores Java's memory model, visibility and ordering issues, and shows how Java 8 redesigns ConcurrentHashMap with CAS and Unsafe to achieve strong consistency for put and get operations.
Log4j2’s asynchronous logging can cause thread blocking when the Disruptor ring buffer fills, a problem explored through its architecture, root causes, and practical mitigation strategies such as dual‑track log classification, bytecode‑enhanced line‑level control, Maven plugins, and IDE integrations for dynamic log management.
This article explains how RocketMQ, a Chinese‑origin message queue, simplifies Kafka’s architecture while adding powerful features such as tag‑based filtering, transactional messaging, delayed and dead‑letter queues, and a unified commit‑log storage model, making delayed processing and high‑throughput scenarios easier to implement.
This article examines MySQL slow‑query troubleshooting, explaining how the optimizer estimates costs, why indexes may be ineffective even when present, the impact of memory fragmentation, pitfalls of prefix indexes, index merging techniques, and additional resource‑related factors that can cause seemingly healthy SQL statements to become slow.
