大神们,我现在有个问题,帮我看下:
因为使用nginx均衡负载,由于分发请求到不同服务器,这样如果只想把上传的图片只保存到一台服务器就会出问题。
百度到的方法:
第一种方法是代码里面使用ftp 把文件同步到保存服务器
第二种方法是如果不是保存文件的服务器,使用curl 把文件提交到保存服务器再重新存一次。
第三种方法就是直接使用保存服务器的ip来调接口了。第三种方法我们这边先不考虑。
不知道大神们,遇到这种情况是怎么实现这种需求的
回复内容:
大神们,我现在有个问题,帮我看下:
因为使用nginx均衡负载,由于分发请求到不同服务器,这样如果只想把上传的图片只保存到一台服务器就会出问题。
百度到的方法:
第一种方法是代码里面使用ftp 把文件同步到保存服务器
第二种方法是如果不是保存文件的服务器,使用curl 把文件提交到保存服务器再重新存一次。
第三种方法就是直接使用保存服务器的ip来调接口了。第三种方法我们这边先不考虑。
不知道大神们,遇到这种情况是怎么实现这种需求的
宿主的nginx对于上传的location做特殊处理, 只让一台机器来负责文件上传, 不完美但是有效, 可以作为一段时间的过度方案
搭建一个分布式文件系统, 挂载到所有的服务器上, 处理文件上传后写只写入这个特定目录, nginx中规划一个location指向这个这个目录(例如/data/upload), 缺点就是要多维护一个这个分布式文件系统 (和你的第一种思路有点像, 但分布式文件系统不需要"同步")
使用外部CDN文件上传来解决这个问题, 七牛, 又拍云都可以
1.专门整几台服务器用来存这些静态资源;
2.整出几个盘,弄成网络盘(nfs),专门用来存储这些文件,每个服务器都去挂载这几个盘,和windows的共享文件夹类似;
3.上传成功之后返回一个文件的url,这个url就是文件的地址了;

What’s still popular is the ease of use, flexibility and a strong ecosystem. 1) Ease of use and simple syntax make it the first choice for beginners. 2) Closely integrated with web development, excellent interaction with HTTP requests and database. 3) The huge ecosystem provides a wealth of tools and libraries. 4) Active community and open source nature adapts them to new needs and technology trends.

PHP and Python are both high-level programming languages that are widely used in web development, data processing and automation tasks. 1.PHP is often used to build dynamic websites and content management systems, while Python is often used to build web frameworks and data science. 2.PHP uses echo to output content, Python uses print. 3. Both support object-oriented programming, but the syntax and keywords are different. 4. PHP supports weak type conversion, while Python is more stringent. 5. PHP performance optimization includes using OPcache and asynchronous programming, while Python uses cProfile and asynchronous programming.

PHP is mainly procedural programming, but also supports object-oriented programming (OOP); Python supports a variety of paradigms, including OOP, functional and procedural programming. PHP is suitable for web development, and Python is suitable for a variety of applications such as data analysis and machine learning.

PHP originated in 1994 and was developed by RasmusLerdorf. It was originally used to track website visitors and gradually evolved into a server-side scripting language and was widely used in web development. Python was developed by Guidovan Rossum in the late 1980s and was first released in 1991. It emphasizes code readability and simplicity, and is suitable for scientific computing, data analysis and other fields.

PHP is suitable for web development and rapid prototyping, and Python is suitable for data science and machine learning. 1.PHP is used for dynamic web development, with simple syntax and suitable for rapid development. 2. Python has concise syntax, is suitable for multiple fields, and has a strong library ecosystem.

PHP remains important in the modernization process because it supports a large number of websites and applications and adapts to development needs through frameworks. 1.PHP7 improves performance and introduces new features. 2. Modern frameworks such as Laravel, Symfony and CodeIgniter simplify development and improve code quality. 3. Performance optimization and best practices further improve application efficiency.

PHPhassignificantlyimpactedwebdevelopmentandextendsbeyondit.1)ItpowersmajorplatformslikeWordPressandexcelsindatabaseinteractions.2)PHP'sadaptabilityallowsittoscaleforlargeapplicationsusingframeworkslikeLaravel.3)Beyondweb,PHPisusedincommand-linescrip

PHP type prompts to improve code quality and readability. 1) Scalar type tips: Since PHP7.0, basic data types are allowed to be specified in function parameters, such as int, float, etc. 2) Return type prompt: Ensure the consistency of the function return value type. 3) Union type prompt: Since PHP8.0, multiple types are allowed to be specified in function parameters or return values. 4) Nullable type prompt: Allows to include null values and handle functions that may return null values.


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