IT. Expert System.

PHP

Introduction


Introduction

The mysqlnd query result cache plugin adds easy to use client-side query caching to all PHP MySQL extensions using mysqlnd.

As of version PHP 5.3.3 the MySQL native driver for PHP ( mysqlnd) features an internal plugin C API. C plugins, such as the query cache plugin, can extend the functionality of mysqlnd.

Mysqlnd plugins such as the query cache plugin operate transparent from a user perspective. The cache plugin supports all PHP applications and all PHP MySQL extensions ( mysqli, mysql, PDO_MYSQL). It does not change existing APIs.

No significant application changes are required to cache a query. The cache has two operation modes. It will either cache all queries (not recommended) or only those queries marked with a certain SQL hint (recommended).

Key Features

  • Transparent and therefore easy to use

    • supports all PHP MySQL extensions

    • no API changes

    • very little application changes required

  • Flexible invalidation strategy

    • Time-to-Live (TTL)

    • user-defined

  • Storage with different scope and life-span

    • Default (Hash, process memory)

    • APC

    • MEMCACHE

    • sqlite

    • user-defined

  • Built-in slam defense to prevent cache stampeding.

Limitations

The current 1.0.1 release of PECL mysqlnd_qc does not support PHP 5.4. Version 1.1.0-alpha lifts this limitation.

Prepared statements and unbuffered queries are fully supported. Thus, the plugin is capable of caching all statements issued with mysqli or PDO_MySQL, which are the only two PHP MySQL APIs to offer prepared statement support.

On the name

The shortcut mysqlnd_qc stands for mysqlnd query cache plugin. The name was chosen for a quick-and-dirty proof-of-concept. In the beginning the developers did not expect to continue using the code base. Sometimes PECL/mysqlnd_qc has also been called client-side query result set cache.



Content

Android Reference

Java basics

Java Enterprise Edition (EE)

Java Standard Edition (SE)

SQL

HTML

PHP

CSS

Java Script

MYSQL

JQUERY

VBS

REGEX

C

C++

C#

Design patterns

RFC (standard status)

RFC (proposed standard status)

RFC (draft standard status)

RFC (informational status)

RFC (experimental status)

RFC (best current practice status)

RFC (historic status)

RFC (unknown status)

IT dictionary

License.
All information of this service is derived from the free sources and is provided solely in the form of quotations. This service provides information and interfaces solely for the familiarization (not ownership) and under the "as is" condition.
Copyright 2016 © ELTASK.COM. All rights reserved.
Site is optimized for mobile devices.
Downloads: 476 / . Delta: 0.00622 с