如何在 TYPO3 中进行缓存预热

Question

In another question , there is the recommendation to setup a cache_clearAtMidnight via TypoScript and do a subsequent cache warmup.

I would like to know how to do this cache warmup because I did not find a scheduler task to do it.

(Clearing the entire cache once a day seems excessive, but the cache warmup seems like a good idea to me in any case.)

Answer 1

As I don't know whether there is an internal mechanism in TYPO3 for cache warming, I built my own little cache warmer based around a simple PHP script (can actually be anything – Python, PHP, Bash,...). The script reads the sitemap.xml and requests each page via cURL .

I use a custom user agent to exclude these requests from statistics.

curl_setopt($ch, CURLOPT_USERAGENT, 'cache warming - TYPO3');

Answer 2

You can use this ext. Its simple wget wrapper but you can add it as Scheduler task.

https://github.com/visuellverstehen/t3fetch

Answer 3

There are extensions available to do cache warmup:

• crawler
• b13/warmup

See also this relatively new blog post (part 1) on caching by Benni Mack:

• Caching in TYPO3 - Part 1

In general, there are a number of things to consider as well, eg changing cache duration, optimizing for pages to load faster without being cached etc.

Btw, cache_clearAtMidnight does clear the cache at midnight, it sets the expire time to be at midnight. Once the cache has been expired, it will be regenerated. Has the same effect, but might be good to know.