Memcached Memory Usage

Wind Network (ithov.com) original article: Memcached is a set of distributed memory object caching system, which can reduce the load of database in the dynamic system, and improve the system performance. Memcached is used most of the time as a front-end cache for the database, because it is less expensive than a database for SQL parsing, disk operations, and uses memory to manage data, so it can provide better performance than directly reading the database. In addition, memcached is often used as a storage medium for data sharing between servers. After studying this chapter, I believe ...

With the explosion of information, micro-blogging website Twitter was born. It is no exaggeration to describe Twitter's growth with the word "born". Twitter has grown from 0 to 66,000 since May 2006, when the number of Twitter users rose to 1.5 in December 2007. Another year, December 2008, Twitter's number of users reached 5 million. [1] The success of Twitter is a prerequisite for the ability to provide services to tens of millions of users at the same time and to deliver services faster. [2,3,4 ...

Web site performance is an objective indicator, can be reflected in response time, throughput, concurrency, performance counters and other technical indicators. 1. Performance Test Indicator 1.1 response time refers to the time that the application takes to perform an operation, from the time it takes to send the request to the final receipt of the response data. The following is a list of common operational response schedules for the system. Operation Response time Open a website a few seconds database query a record (has index) more than 10 milliseconds machine ...

Instagram is a model for many startups, with more than 10 of companies, from the beginning of obscurity to the end of a hefty takeover by Facebook. How does a company, from the beginning of the operating system selection, server to database selection, message push, how to do? This article compiles from the Instagram engineering blog, tells you Instagram technical secret. When choosing a system, our core principles are: Try to be as simple as possible, do not do repetitive work, and try to adopt proven technology. Operating system/Hosting because we were only three.

When an enterprise migrates its core IT systems to a private cloud or public cloud network, the work is not over. 　　Now there is a different set of technical issues that need to be addressed: how to manage the cloud to ensure that the enterprise's investment returns, providing the desired efficiency and return on investment. Cloud management and cloud monitoring have become more important as the Amazon EC2 (Flex Computing Cloud) Service outage occurred this April. In that incident, the IT field saw what would happen when the cloud environment encountered a failure ...

From an article in the Openmymind blog, the author introduces two MongoDB monitoring gadgets, Mongospy and Mongowatch, which they write with Node.js, and then puts forward the idea of using compression to save space when storing text in MongoDB. These two gadgets are not very powerful and simple to implement, and if you can manipulate MongoDB in any language, believe you can write a similar thing. Mongospy: A MongoDB slow query to monitor ...