Course Intermediate 10914
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 16850
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 10572
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.
2018-11-04 00:06:47 0 2 1216
php - Using http's Last-Modified cache to read cached files?
2017-05-16 13:14:43 0 1 576
nginx caches JS for one hour. How to update the cache?
2017-05-16 17:24:48 0 8 785
java - Does ehcache cache use virtual machine memory?
2017-06-23 09:13:46 0 1 1030
2017-06-20 10:07:14 0 1 893
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 1079
Course Introduction:No, Redis cache breakdown and penetration are different concepts. Penetration refers to concurrent access to uncached data leading to direct access to the database; penetration refers to malicious requests accessing non-existent data, resulting in misses in both cache and database. The solution is to use mutex locks and parameter verification respectively.
2024-04-20 comment 0 953
Course Introduction:Cache penetration means that data not stored in the cache directly accesses the database, which can be solved through bloom filters, null value caching, and circuit breaker mechanisms.
2024-04-20 comment 0 623
Course Introduction:Redis cache penetration means that keys that do not exist in the cache will be directly queried in the database every time. The following measures can be taken to solve this problem: 1. Use Bloom filters to quickly determine whether the key exists; 2. Use null value cache to cache values that do not exist. ; 3. Apply cache penetration protection algorithm (funnel algorithm, sliding window counter) to limit query frequency; 4. Optimize database query statements; 5. Strengthen data verification to avoid illegal key query cache.
2024-04-20 comment 0 722
Course Introduction:How PhpFastCache solves the cache penetration problem In the development process of modern web applications, caching is an important technical means to improve performance and reduce database load. However, you will inevitably encounter the problem of cache penetration, that is, requesting cached data that does not exist, resulting in the need to query the database for each request, which increases the burden on the system. PhPFastCache is a popular caching solution. Here is how to use PhPFastCache to solve cache penetration problems. f
2023-07-15 comment 0 809