


PHP solves the problem of high website traffic and high concurrency, and php solves the problem of traffic concurrency
First of all, confirm whether the server hardware is enough to support the current traffic.
Ordinary P4 servers can generally support up to 100,000 independent IPs per day. If the number of visits is greater than this,
then you must first configure a higher-performance dedicated server to solve the problem
, otherwise no amount of optimization can completely solve the performance problem.
Secondly, optimize database access.
It is of course best to implement complete staticization of the front desk, as there is no need to access the database at all. However, for websites that are frequently updated,
staticization often cannot satisfy certain functions.
Caching technology is another solution, which is to store dynamic data in cache files. Dynamic web pages directly call
these files without having to access the database. Both WordPress and Z-Blog use this method extensively. Caching technology. I
also wrote a counter plug-in for Z-Blog, which is also based on this principle.
If it is indeed impossible to avoid access to the database, you can try to optimize the query SQL of the database. Avoid using statements such as
Select * from. Each query only returns the results you need, avoiding the need for a short period of time. A large number of
SQL queries.
Third, external hotlinking is prohibited.
Hotlinking of pictures or files from external websites often brings a lot of load pressure, so external hotlinking of pictures or files to one's own
should be strictly restricted. Fortunately, you can simply refer to it at present. To control hotlinking, Apache itself
can disable hotlinking through configuration. IIS also has some third-party ISAPIs that can achieve the same function.
Of course, forging referrals can also be done through code to achieve hotlinking, but currently there are not many people who deliberately forge referrals to hotlink.
You can ignore it or use non-technical means to solve it, such as on pictures. Add watermark.
Fourth, control the download of large files.
Downloading large files will take up a lot of traffic, and for non-SCSI hard drives, downloading a large number of files will consume
CPU, reducing the website's responsiveness. Therefore, try not to provide downloads of large files exceeding 2M. If
is required, it is recommended to place large files on another server.
Fifth, use different hosts to divert the main traffic
Place files on different hosts and provide different images for users to download. For example, if you feel that RSS files take up
a lot of traffic, then use services such as FeedBurner or FeedSky to place the RSS output on other hosts. In this way, most of the traffic pressure of other people's access will be concentrated on FeedBurner's host, and RSS will not be available. It takes up too many resources.
Sixth, use traffic analysis and statistics software.
Install a traffic analysis and statistics software on the website, you can instantly know which places consume a lot of traffic and which pages
need to be optimized. Therefore, accurate statistical analysis is required to solve the traffic problem. Can.

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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