I¹m understand caching and packages like cachelite, etc. What perplexes me is how to update a cache in a multi-server, one database environment. Say I cache config data from the database on each server. If I update config info in the database, how would I propagate this out to each server. Essentially, how would I invalidate each cache?
Normally, a cache routine checks for an expire time against a file. But what is the equivalent with a database? Create a last updated field? Perhaps there¹s a last updated flag in the db? Ideas? Cliff Hirsch
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