Experienced in Java and Python, we share and learn together. For submissions or collaborations, DM us.
This article explains how the @CacheEvict annotation in Spring Cache can be used to delete specific cache entries or clear entire caches, detailing its parameters such as value, allEntries, and beforeInvocation with a concrete code example.
The article explains how Spring Cache, introduced after Spring 3.1, uses the @Cacheable annotation to declaratively cache method results, detailing each attribute such as cacheNames, key, keyGenerator, and unless, with code examples illustrating key generation and conditional caching.
The article explains that @CachePut serves as a trigger to update or add cache entries in Spring Cache, contrasting its behavior with @Cacheable, detailing execution flow, handling of null results, and the recommendation against using both annotations on the same method.
The article explains why static assets can still trigger CORS errors even after API endpoints are configured correctly, distinguishes data‑API versus static‑resource CORS, and shows how adding an Access‑Control‑Allow‑Origin header in Nginx resolves the problem.
This guide explains how to set up Nginx so that one HTTPS domain can handle both backend API requests and serve static resources, simplifying certificate management and improving response speed through caching.
This article demonstrates how to encapsulate common RedisTemplate operations—such as deleting single or multiple keys, setting expiration, checking existence, and performing String and Hash CRUD actions—by providing concrete Java code examples and step‑by‑step method implementations.
This article explains the common Redis caching tools, introduces Spring Data Redis's bound operation APIs, and provides step‑by‑step configuration examples for RedisTemplate, helping developers choose and set up a Redis client in Java applications.
This article explains how to access the Redis CLI on Linux, connect to remote servers, and provides detailed examples of common commands for each of Redis's five data types—String, List, Set, Sorted Set, and Hash—highlighting key syntax and usage patterns.
This tutorial walks through installing Docsify, initializing a project, configuring index.html, coverpage, navbar and sidebar files, and serving the documentation site locally, providing step‑by‑step commands, code snippets, and screenshots for a complete Docsify setup.
The article explains that the “invalid source release: 10” error occurs because the IDE is set to JDK 10 while the system JDK is 8, and it walks through checking the JDK version and aligning IDEA project, compiler, and pom.xml settings to resolve the issue.
