# JavaGuide | Guide | Knowledge Base | Instagit

Java 面试 & 后端通用面试指南，覆盖计算机基础、数据库、分布式、高并发与系统设计。准备后端技术面试，首选 JavaGuide！

GitHub Stars: 154k

Repository: https://github.com/Snailclimb/JavaGuide

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## Articles

### [What Are Design Patterns and How Are They Applied in Spring?](/Snailclimb/JavaGuide/design-patterns-spring-application)

Explore design patterns and see how Spring applies key solutions like IoC Factory Singleton Proxy and more to build flexible maintainable enterprise Java applications. Learn to code smarter.

- Tags: deep-dive
- Published: 2026-02-24

### [How to Design a Scalable System with Database Sharding and Read-Write Separation](/Snailclimb/JavaGuide/scalable-system-design-database-sharding-read-write-separation)

Learn to design a scalable system using database sharding for write load distribution and read-write separation to reduce master contention. Implement with middleware like ShardingSphere.

- Tags: architecture
- Published: 2026-02-24

### [Kafka vs RabbitMQ: Core Architectural Differences Explained](/Snailclimb/JavaGuide/kafka-vs-rabbitmq-message-queues)

Compare Kafka and RabbitMQ message queues. Learn their core architectural differences, from Kafka's log-based streaming to RabbitMQ's flexible routing.

- Tags: deep-dive
- Published: 2026-02-24

### [Microservices vs Monolithic Architectures: Structural Differences and Trade-offs](/Snailclimb/JavaGuide/microservices-vs-monolithic-architectures)

Explore microservices vs monolithic architectures. Understand their structural differences, trade-offs, and choose the right approach for your application development.

- Tags: architecture
- Published: 2026-02-24

### [Handling High-Concurrency Traffic in Java: 9 Proven Strategies from JavaGuide](/Snailclimb/JavaGuide/high-concurrency-traffic-handling-strategies)

Master high concurrency traffic in Java with 9 expert strategies. Learn to use virtual threads, non-blocking I/O, concurrent collections, rate limiting, and distributed messaging to prevent failure.

- Tags: best-practices
- Published: 2026-02-24

### [How the Raft Consensus Algorithm Works in Distributed Systems](/Snailclimb/JavaGuide/distributed-systems-raft-consensus-algorithm)

Understand how the Raft consensus algorithm achieves consistency in distributed systems. Explore leader election, log replication, and safety guarantees for reliable data management.

- Tags: deep-dive
- Published: 2026-02-24

### [What Is the Difference Between RESTful API and GraphQL?](/Snailclimb/JavaGuide/restful-api-vs-graphql)

Understand RESTful API vs GraphQL. Explore how REST uses multiple endpoints with fixed data, while GraphQL offers a single endpoint for precise data retrieval, preventing over and under-fetching.

- Tags: deep-dive
- Published: 2026-02-24

### [How Does Redis Implement Persistence with RDB and AOF?](/Snailclimb/JavaGuide/redis-persistence-rdb-aof)

Learn how Redis persistence ensures data durability using RDB snapshots and AOF command logs. Understand these core mechanisms and their configuration for reliable data storage.

- Tags: deep-dive
- Published: 2026-02-24

### [Differences Between HTTP and HTTPS Protocols: Complete Technical Guide](/Snailclimb/JavaGuide/http-vs-https-protocols)

Discover the key differences between HTTP and HTTPS protocols. Learn how HTTPS ensures secure authentication, data integrity, and enhances your search engine ranking for a safer web experience.

- Tags: deep-dive
- Published: 2026-02-24

### [Spring IoC Container and AOP Implementation: A Deep Dive into Loose Coupling and Cross-Cutting Concerns](/Snailclimb/JavaGuide/spring-ioc-container-aop-implementation)

Explore Spring IoC container and AOP implementation. Understand how IoC manages beans and AOP weaves cross-cutting concerns using dynamic proxies for loose coupling and better maintainability.

- Tags: deep-dive
- Published: 2026-02-24

### [What Is Consistent Hashing? A Deep Dive for Distributed Systems](/Snailclimb/JavaGuide/consistent-hashing-distributed-systems-usage)

Understand consistent hashing a distributed system technique. Learn how it minimizes key remapping when servers change for efficient load balancing.

- Tags: deep-dive
- Published: 2026-02-24

### [How TCP Three-Way Handshake and Four-Way Wave Work: A Complete Guide to Connection Lifecycle](/Snailclimb/JavaGuide/tcp-three-way-handshake-four-way-wave)

Understand the TCP three-way handshake and four-way wave connection lifecycle. Learn how SYN SYN-ACK ACK FIN packets establish and terminate TCP connections efficiently.

- Tags: deep-dive
- Published: 2026-02-24

### [Differences Between synchronized and ReentrantLock in Java: A Complete Comparison](/Snailclimb/JavaGuide/java-synchronized-vs-reentrantlock)

Compare synchronized vs ReentrantLock in Java. Learn about their differences in locking, management, and features like fairness and interruptibility to choose the right tool for your concurrency needs.

- Tags: deep-dive
- Published: 2026-02-24

### [How the Java ClassLoader Mechanism Works: From Bootstrap to Custom Loaders](/Snailclimb/JavaGuide/java-classloader-mechanism)

Discover how the Java ClassLoader mechanism works. Learn about the hierarchical delegation model, from Bootstrap to custom loaders, ensuring secure and efficient class loading.

- Tags: deep-dive
- Published: 2026-02-24

### [Optimistic Locking vs Pessimistic Locking in Java: Key Differences and Implementation](/Snailclimb/JavaGuide/java-optimistic-vs-pessimistic-locking)

Understand optimistic locking vs pessimistic locking in Java. Learn how synchronized locks prevent conflicts while CAS operations optimize for rare contention.

- Tags: deep-dive
- Published: 2026-02-24

### [CAP Theorem and BASE Theory in Distributed Systems: Complete Guide with Java Examples](/Snailclimb/JavaGuide/distributed-systems-cap-theorem-base-theory)

Master the CAP theorem and BASE theory in distributed systems. Learn about consistency, availability, partition tolerance, and eventual consistency with Java examples. Build robust systems.

- Tags: deep-dive
- Published: 2026-02-24

### [How Redis Implements Distributed Locks: SETNX, Redisson, and RedLock Explained](/Snailclimb/JavaGuide/redis-distributed-locks-implementation-limitations)

Discover how Redis implements distributed locks using SETNX, Redisson, and RedLock. Understand their limitations like premature expiry and split-brain scenarios.

- Tags: deep-dive
- Published: 2026-02-24

### [Java JVM Garbage Collection Algorithms and Memory Model Explained](/Snailclimb/JavaGuide/java-jvm-garbage-collection-memory-model)

Understand Java JVM garbage collection algorithms like mark-compact and copying, and grasp the memory model for efficient application performance.

- Tags: deep-dive
- Published: 2026-02-24

### [How Java HashMap Handles Collisions and Time Complexity: Separate Chaining Explained](/Snailclimb/JavaGuide/java-hashmap-collision-handling-time-complexity)

Learn how Java HashMap handles collisions using separate chaining and its underlying time complexity. Understand the conversion to red-black trees for optimized performance.

- Tags: deep-dive
- Published: 2026-02-24