Java backend, microservices, distributed systems, containerized programming, and more.
This article analyzes why MyBatis foreach batch inserts become extremely slow with thousands of rows, explains the underlying parsing and PreparedStatement overhead, and presents faster alternatives such as ExecutorType.BATCH, Java‑side loops, and MyBatis Dynamic SQL batch support.
This article examines whether to put a try‑catch block inside or outside a Java for loop, discussing scenarios, performance implications, and providing code examples to help developers choose the most appropriate approach.
This article examines Docker's declining dominance, explores its limitations, and introduces lighter, more secure alternatives and next‑generation container runtimes, while outlining evolving orchestration trends and how developers can choose the right tools for modern cloud‑native workloads.
This article walks through a real‑world scenario where replacing MyBatis with MyBatis‑Plus caused a LocalDateTime conversion exception due to changes in MyBatis 3.5.1 and an outdated mysql‑connector‑java driver, demonstrates how to pinpoint the root cause via stack traces, and provides step‑by‑step fixes including driver upgrades and version considerations, while also sharing lessons learned from related validation bugs.
This article dissects the MySQL connection process in Java, measuring each handshake and authentication step with Wireshark to reveal why establishing a single database connection can consume around 200 ms, and why connection pooling is essential for high‑traffic applications.
This article examines Java HashMap traversal techniques, compares keySet, entrySet, iterator and stream approaches, explains why keySet appears to iterate twice by revealing its internal iterator implementation, and presents code examples and decompiled snippets to illustrate the underlying mechanisms.
This article compares the performance of creating objects with the new operator versus Java reflection, explains why reflection incurs a large overhead, and outlines scenarios where each approach is appropriate, helping developers choose the right technique for their code.
This article explains why using MyBatis foreach for bulk inserts can cause severe performance degradation, demonstrates the underlying parsing overhead, and shows how switching to ExecutorType.BATCH or limiting batch sizes to 20‑50 rows dramatically speeds up insert operations.
This article explains the fundamental differences between using the new operator and Java reflection to instantiate objects, presents a performance benchmark showing reflection’s significant overhead, analyzes the underlying reasons, and outlines practical scenarios where each approach is appropriate.
This guide walks you through installing RedisInsight, configuring its environment variables, deploying it on Kubernetes, and using its GUI to monitor Redis memory, connections, and performance, while also covering the prerequisite Redis server setup and essential command‑line operations.
