Course Intermediate 10916
Course Introduction:"Self-study IT Network Linux Load Balancing Video Tutorial" mainly implements Linux load balancing by performing script operations on web, lvs and Linux under nagin.
Course Advanced 16863
Course Introduction:"Shangxuetang MySQL Video Tutorial" introduces you to the process from installing to using the MySQL database, and introduces the specific operations of each link in detail.
Course Advanced 10582
Course Introduction:"Brothers Band Front-end Example Display Video Tutorial" introduces examples of HTML5 and CSS3 technologies to everyone, so that everyone can become more proficient in using HTML5 and CSS3.
php - Using http's Last-Modified cache to read cached files?
2017-05-16 13:14:43 0 1 576
php - How to implement caching in ci3.0?
2017-07-05 10:46:03 0 1 806
2018-11-04 00:06:47 0 2 1218
codeigniter - PHP CI framework caching problem online etc.
2017-05-16 16:43:32 0 1 608
nginx caches JS for one hour. How to update the cache?
2017-05-16 17:24:48 0 8 789
Course Introduction:Level 2 cache and level 3 cache are two common cache levels in computer systems. They have obvious differences in functionality and performance. First of all, the second-level cache is a layer of cache located between the central processing unit (CPU) and the main memory. It usually consists of a high-speed cache (L1) and a secondary cache (L2). The L1 cache is located inside the CPU and has the lowest latency and smallest capacity. It mainly stores data frequently accessed by the CPU core. The L2 cache is located on the CPU chip, has a larger capacity, and stores more data. In contrast, Level 3 mitigation
2024-02-18 comment 0 596
Course Introduction:The difference between cache penetration and cache penetration: Cache penetration: occurs when a large number of concurrent requests access uncached keys, causing excessive pressure on the database. Cache penetration: occurs when malicious requests or crawlers frequently access keys that have never been cached, resulting in unnecessary database access.
2024-04-19 comment 0 1080
Course Introduction:The difference between cache avalanche and breakdown: time of occurrence: avalanche is the failure of multiple caches at the same time, and breakdown is the failure of a single cache. Scope of impact: Avalanche affects all caches, breakdown only affects a single hotspot data. Cause: Avalanches are caused by improper expiration policies, and breakdowns are caused by cache penetration or hotspot data not being cached. Impact: Avalanches may cause service unavailability, breakdowns will not. Countermeasures: Optimizing the expiration strategy and progressive expiration can deal with avalanches, and mutex locks and current limiting mechanisms can deal with breakdown.
2024-04-19 comment 0 1194
Course Introduction:In this article, we will understand the difference between cache and cookies − cache which helps store frequently used website content. The content of the website is stored in the browser. It needs to be expired manually. It takes up more space. The different types of cache are: browser cache and proxy cache. The content it stores includes HTML pages, images, JavaScript and CSS. It does not send a response in the request. Cookies help store user choices. The contents of the cookie are stored on the server and in the browser. It will automatically expire. It takes up less space. The different types of cookies are: short-lived cookies and persistent cookies. Cookies store browsing session and temporary tracking data. C
2023-09-14 comment 0 1180
Course Introduction:The difference between cache and database in Golang is: data persistence: cache stores data temporarily, while database stores data persistently. Hit rate optimization: The higher the cache hit rate, the better the performance. Invalidation policy: Cache entries are invalidated based on TTL or LRU algorithm. Query flexibility: The database allows complex queries to be executed, with limited caching flexibility. Consistency: The database guarantees data consistency, but the cache does not.
2024-06-03 comment 0 773