Focused on software development, sharing source code and tutorials for various systems.
The article examines a sophomore's claimed 600k RMB revenue AI video platform, revealing it likely wraps the open-source MagicalCanvas project and questions its cost structure, sustainability of student-discounted API access, and the difference between product integration value versus model relay stations.
This article demonstrates how to build a Java Agent using the Instrumentation API and ASM for bytecode manipulation, covering premain/agentmain entry points, dynamic class redefinition via Attach API, and explores Arthas trace command's implementation using the bytekit framework for non-invasive method profiling.
This article details SQLite's SQL enhancements from versions 3.22.0 to 3.26.0 in 2018, covering boolean literals with IS [NOT] TRUE/FALSE, window functions with OVER clause limitations, FILTER clause for aggregates, UPSERT via INSERT ON CONFLICT, and column renaming via ALTER TABLE RENAME COLUMN.
This article explores Google Guava's core utilities for Java developers, demonstrating how Joiner, Splitter, and CharMatcher simplify string handling, how Immutable collections provide true immutability versus JDK's unmodifiable views, and how Multimap, BiMap, and Table solve common collection gaps. It also covers primitive utilities, functional transforms with Functions and Predicate, null-safety via Preconditions and Optional, a self-maintaining local Cache, and ListenableFuture for cleaner async callbacks.
Netdata is an open-source monitoring agent that auto-discovers 800+ integrations, collects metrics every second, runs 18 unsupervised ML models locally for anomaly detection, and uses ~5% CPU/200MB RAM at 5000 metrics/sec — all without configuration.
A developer shares their successful China Merchants Bank Java backend interview experience, detailing 20 technical questions covering HashMap, ConcurrentHashMap, synchronization, thread pools, Redis cache penetration, MySQL indexing, Spring Boot auto-configuration, Agent memory, RAG, multi-agent orchestration, and more, with answers and preparation tips.
This case study details how to develop a WeChat event-registration mini-program in two hours using AiOnly's model aggregation platform and WorkBuddy's AI-assisted coding, covering requirements definition, tool configuration, code generation, testing, and deployment for a 5,000 RMB project.
The article explains why OFFSET/LIMIT pagination causes full table scans and linear performance degradation with large offsets, demonstrates a 100k-row benchmark where cursor-based pagination using primary keys runs in 0.01s versus 12.80s for OFFSET, and recommends keyset pagination for scalable systems while noting limitations for tables without unique sequential columns.
An interviewer shares insights from three Agent developer candidates who had impressive resumes but struggled with production concerns like tool error handling, RAG evaluation, memory design, loop control, and observability, highlighting the gap between demo-building and production-ready systems.
This article reviews five IntelliJ IDEA plugins—Alibaba Java Coding Guidelines, SonarQube for IDE, CheckStyle-IDEA, PMD, and SpotBugs—that help Java developers detect code style violations, security issues, code smells, and potential bugs directly in the IDE, with guidance on combining them effectively.
