clear cache command line

original articles, reproduced please specify: reproduced from the electric Shang Sharong ec-shalom.com, specialized in electric business.The concept of caching has not been clear, resulting in the use of PHP write cache is also very not

CPU cache has always been an important knowledge of computer architecture, but also the technical difficulties in concurrent programming design, and related reference materials like Shijiang, the vast stars, read the're walking, bland, words

Yii is a high-performance PHP5 Web application Development framework. With a simple command-line tool, YIIC can quickly create a code framework for a Web application, and developers can add business logic based on the generated code framework to

In Linux systems, we often use the free command to view the state of the system's memory usage. On a RHEL6 system, the display of the free command is probably a state:[[email protected] ~]# free             total       used       free     shared  

The processor allows any region of the system memory to be cached in L1, L2, and L3 caches. In a separate page or area of system memory, it allows the cache type (also known as the memory type) to be specified (see section 11.5 ). The Storage types

the output of the free command on Linux. here is the result of the free run, with a total of 4 rows. For convenience, I added a column number. This can be seen as a two-dimensional array fo (free output). For example: FO[2][1] = 24677460

Two types of cache servers:1. Proxy cache servers; proxy-like cache server;2. Side-hung cache servers; bypass cache server;Cache servers can also be categorized according to cached data content:1. Data cache;2. Page cache;The data has access to the

Cache penetration refers to querying a nonexistent data, the cache layer and the storage layer are not hit, but for fault-tolerant considerations, if the data from the storage layer is not written to the cache layer, 11-3 shows the entire process is

Nginx cache acceleration steps are as follows One, add moduleThe Nginx cache shared by this article requires additional compilation of ngx_cache_purge modules. As for the download module, recompile will be said later.Second, nginx configurationTo

A php Cache class Cache. inc. php: Class Cache { /** * $ Dir: cache file storage directory * $ Lifetime: cache file validity period, in seconds * $ Cacheid: cache file path, including