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How do I fetch data from MySQL database in PHP and create a PDF?
First, figure out what your performance requirements need to be. T aren’t “as fast as possible” - t’re “as fast as needed to solve my engineering problem”. Second, explore the schema of the MySQL DB itself, before investing in expensive engineering strategies (in terms of time spent, complication of infrastructure, etc) such as Redis or data compression. It may be (and probably is the case) that the queries used by the API are not well-designed or well-indexed. Also, make sure the MySQL instance and server are well-provisioned, with plenty of RAM and fast storage, and the half-dozen or so MySQL config parameters that matter are set to reasonable values. And make sure there isn’t a slow network between your API and the MySQL backend. This should get your app to within a few milliseconds or less for each query. If this is *still* too slow, you can start exploring caching options such as Redis. However, a tightly designed MySQL DB, where queries always use primary keys and queries are well-cached, won’t be all that much slower than something like Redis, as InnoDB is already acting as a name-value-pair store in this situation. When diagnosing and fixing a performance problem, you want to start simple and go hard, versus “the db is too slow, let’s rewrite our app from end-to-end”, which happens far too often.
Create PDF: All You Need to Know
I hope this has given you a bit of an idea about what goes on behind the scenes when you're adding a query. Thanks for reading! — - If you enjoyed this video please check out my other videos (they tend to be awhile out).
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