Use Memcached caching technology to optimize audio and video playback in PHP

With the continuous development of Internet technology, audio and video resources have become a very important form of content on the Internet, and PHP, as one of the most widely used languages ​​​​in network development, is also constantly used in video and audio Play area. However, with the increasing number of users of audio and video websites, many websites have discovered a problem: under high concurrency conditions, PHP's processing speed of audio and video slows down significantly, resulting in problems such as inability to play in time or stuck playback. In order to solve this problem, Memcached caching technology came into being and became an important way to optimize audio and video playback in PHP.

Memcached is a commonly used memory caching service. It can store data in memory and access it quickly when needed, greatly improving the speed of data access. Different from traditional caching, the advantage of Memcached is that it can support a distributed architecture, and data between different servers can be shared with each other, maximizing the efficiency of caching. In PHP, by storing audio and video related data in Memcached, rapid data processing can be achieved, thereby providing users with a faster and smoother audio and video playback experience.

Specifically, how to use Memcached caching technology to optimize audio and video playback in PHP? Below we will give a detailed plan.

First of all, we need to clarify what kind of audio and video data is suitable for storage in Memcached. In practical applications, it is impossible for us to put all audio and video data in the cache, which will occupy too much memory resources. Therefore, we need to classify audio and video data and decide which data should be stored in the cache based on factors such as access frequency and data size. Normally, the audio and video data stored in the cache should be relatively small and accessed frequently.

Next, we need to write some PHP code to interact with Memcached. Here, we use PHP's Memcached extension to interact with Memcached. By calling the relevant functions in the extension, audio and video data can be stored in the cache or data can be read from the cache. For different audio and video data, we can set different cache times so that the data can be updated in different time periods.

It should be noted that when we read data from the cache, if we find that the data has expired, then we need to obtain the latest data from the database again and store it in the cache. This process is often called "cache penetration". If not handled appropriately, the cache will be filled with useless data, reducing storage efficiency. Therefore, when dealing with cache penetration, we need to be extra careful and use some techniques to ensure the validity of cached data.

In addition to basic data reading and writing operations, in order to better utilize Memcached caching technology, we can also combine some other techniques to further improve caching efficiency. For example, you can use a hash table to disperse data storage and improve cache access speed; you can use persistent connection technology to avoid frequently establishing and closing connections; you can use data compression technology to reduce the storage space of cached data, etc. These techniques need to be selected based on actual conditions to improve cache efficiency and stability.

Finally, it should be noted that although Memcached caching technology can improve PHP's audio and video processing efficiency, this does not mean that we can completely rely on caching to achieve efficient audio and video playback. In practical applications, we also need to improve the operating efficiency of PHP code and reduce the time cost of audio and video processing through some technical means. For example, multi-threading technology can be used to perform segmented processing of audio and video; asynchronous calling technology can be used for concurrent processing, etc. Although these technologies are beyond the scope of this article, they can also bring huge improvements to audio and video processing in PHP.

In short, using Memcached caching technology to optimize audio and video playback in PHP is a very effective solution. As long as we perform reasonable classification, storage and reading processing according to the actual situation, we can greatly improve the audio and video processing efficiency and provide users with a smoother and more efficient audio and video playback experience.

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