The main points of proxy ip pool maintenance

  For the current Internet age, there are many websites that provide proxy IPs, and they all come out as soon as they are searched on a search engine, but the quality is different, and some are even unusable, so we have to screen and crawl, remove the dross, and select the essence. . So what should I do?

The main points of proxy ip pool maintenance

  The first step in maintaining a proxy pool is to find sites that provide free proxies. What we need is proxy server and port information, just crawl it down. So how to save the agent after crawling? First of all, we need to ensure that the goal is to fetch and save. In addition, we need to regularly check the unavailable agents in the queue to remove them, so it needs to be easy to access.

  In addition, how to distinguish which are the latest available and which are old? It is possible to mark with the modification time, but the simpler way is to maintain a queue and store it from only one end, such as the right end, so as to ensure the latest The agent is at the right end of the queue, and at the left end are the agents that have been deposited for a long time. If you want to get an available agent, just take one from the right end of the queue. Then for the left end of the queue, it can’t be allowed to continue to age. The operation that needs to be done is to periodically remove the agent from the left end of the queue, and then perform detection, if it is available, add it to the right end again. Through the above operations, it is ensured that the agent is always up-to-date and available.