symfony - 为什么 Composer 中的依赖更新这么慢？

Question

我正在使用 Composer ( http://getcomposer.org/ ) 来管理 Symfony2 (symfony v 2.1.3) 中已安装的包。 Composer 的版本是de3188c。

我遇到的问题是，当我将新包添加到composer.json并执行它时，显示有关更新依赖项和下一步下载它们的消息的时间非常短。

我在composer.json中有这些数据(见下文)，执行时间大约是20分钟!!!互联网连接速度足够快，我可以非常快地下载大文件...

有什么技巧可以让它更快吗？

{
"name": "symfony/framework-standard-edition",
"description": "The \"Symfony Standard Edition\" distribution",
"autoload": {
    "psr-0": { "": "src/" }
},
"require": {
    "php": ">=5.3.3",
    "symfony/symfony": "2.1.*",
    "doctrine/orm": ">=2.2.3,<2.4-dev",
    "doctrine/doctrine-bundle": "1.0.*",
    "twig/extensions": "1.0.*",
    "symfony/assetic-bundle": "2.1.*",
    "symfony/swiftmailer-bundle": "2.1.*",
    "symfony/monolog-bundle": "2.1.*",
    "sensio/distribution-bundle": "2.1.*",
    "sensio/framework-extra-bundle": "2.1.*",
    "sensio/generator-bundle": "2.1.*",
    "jms/security-extra-bundle": "1.2.*",
    "jms/di-extra-bundle": "1.1.*",
    "doctrine/doctrine-fixtures-bundle": "dev-master",
    "webignition/doctrine-migrations-bundle": "dev-master"
},
"scripts": {
    "post-install-cmd": [
        "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap",
        "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache",
        "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets",
        "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installRequirementsFile"
    ],
    "post-update-cmd": [
        "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap",
        "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache",
        "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets",
        "Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installRequirementsFile"
    ]
},
"minimum-stability": "dev",
"extra": {
    "symfony-app-dir": "app",
    "symfony-web-dir": "web"
}

Answer 1

尝试为composer.json中的每个依赖项指定版本，并在调用composer时使用选项--prefer-dist。它将从存储库(如果可用)下载 ZIP 文件而不是单个文件。

php composer.phar install --prefer-dist