Focused on Java technologies: SSM, the Spring ecosystem, microservices, MySQL, MyCat, clustering, distributed systems, middleware, Linux, networking, multithreading; occasionally covers DevOps tools like Jenkins, Nexus, Docker, ELK; shares practical tech insights and is dedicated to full‑stack Java development.
This tutorial walks through installing Ollama, downloading models like Llama 3, configuring AnythingLLM with Ollama as the LLM and embedding provider, setting up LanceDB as the vector database, and creating a workspace for private local AI chat.
A step-by-step guide to resolve the Docker Engine stopped error on Windows 11 by enabling CPU virtualization, starting Docker Desktop Service, updating WSL, switching the Docker daemon, and launching Docker Desktop as administrator.
The author documents a step-by-step troubleshooting journey for a Java service crashing with EXCEPTION_ACCESS_VIOLATION (0xc0000005) in plcommpro.dll, trying minidump enablement, JDK downgrade from 8u241 to 8u191, JIT compilation exclusion for Hibernate, heap sizing, GC switch to ParallelOldGC, and DLL version checks, with each fix extending uptime but not fully resolving the native crash.
This tutorial demonstrates configuring and using Alibaba's Druid connection pool in Java applications, covering Maven dependencies, properties configuration, basic connection retrieval, a reusable helper class with query and execute methods, and JUnit test cases for CRUD operations.
This tutorial demonstrates how to configure MyBatis SQL statements using Java annotations instead of XML, covering Maven dependencies, project structure, core configuration files, entity mapping, dynamic SQL providers, mapper interfaces with @Select/@Insert/@Update/@Delete annotations, service layer implementation, and JUnit testing.
This guide details the step-by-step process for unblocking a banned WeChat account using the official self-service tool, including manual unblocking steps, SMS verification, and friend-assisted verification with strict eligibility requirements for helpers, plus tips to avoid future bans.
This tutorial demonstrates how to use Jackson in Java for JSON processing, covering Maven dependency setup, JavaBean serialization, collection mapping with TypeReference for generics, and tree-model parsing via JsonNode to extract fields without POJOs.
This tutorial demonstrates setting up Redis on Windows, configuring a Maven project with Jedis 4.1.1, building a connection pool utility, and providing JUnit test examples for operating Redis Strings, Lists, Hashes, Sets, and Sorted Sets with Jedis API.
This tutorial demonstrates implementing file upload and download using Java Servlets with Apache Commons FileUpload, including a CharacterEncodingFilter to handle UTF-8 encoding and resolve Chinese filename corruption during both upload and download operations.
This tutorial demonstrates using Apache POI 5.2.1 to create and read Excel .xlsx files in Java, covering Maven setup, cell styling, formula evaluation, date formatting, and fixing log4j2 logging errors with complete code examples.
