hashing algorithm explained

Memcached distributed algorithm-consistent hashing Preface: We know that data should be stored on M servers. The simplest way is to take the remainder (hash_value % m) and put it on the corresponding server, that is, when a server is added or

There are many algorithms available for load Balancing in server load equalization, including: round Robin (Round Robin), hash algorithm (hash), least join algorithm (least Connection), Response speed algorithm (Response time), Weighted method

The traditional distributed algorithmBefore understanding the Redis distributed algorithm, it is better to understand the application scenario in the cache, after understanding the application scenario, then to understand the consistency hashing

Copy CodeThe code is as follows: APR_DECLARE_NONSTD (unsigned int) apr_hashfunc_default (const char *char_key, apr_ssize_t *klen) { unsigned int hash = 0; Const unsigned char *key = (const unsigned char *) Char_key; const unsigned char *p; apr_ssize_

On the consistent hashing algorithm, there are many blog posts on the Web are explained. 2 recommended. Http://blog.codinglabs.org/articles/consistent-hashing.html http://blog.csdn.net/cywosp/article/details/23397179 To summarize: 1. Online blog

Document directory What does memcached mean by its distributed architecture? Scattered Based on remainder Calculation Disadvantages of scattered calculation based on Remainder A brief description of consistent hashing Function libraries

This blog is written because of a previous interview question:What happens to data on other machines if the memcached cluster needs to increase the machine or reduce the machine?Finally learned that the use of consistent hash algorithm can be solved,

This series of articles navigation Memcached completely parse –1. The foundation of Memcached memcached comprehensive analysis of –2. Understanding memcached Memory Storage Memcached comprehensively analyze the deletion mechanism and development

What does the distributed memcached of memcached mean. Cache::memcached distributed method based on remainder calculation scatter disadvantage consistent hashing consistent hashing simple description support consistent hashing function library

Series article Navigation: Memcached completely dissect –1. The foundation of Memcached memcached comprehensive analysis of –2. Understanding the memory storage of memcached memcached comprehensive analysis of –3. The deletion mechanism and