CODEWITHSUNDEEP
phpdatabasejsonapachedata-structures
River Tam
River Tam

Reputation: 3216

Very small, persistent data structure

I'd like to make a very, very small, but persistent data structure that I can reference quickly server-side, and I'm not sure how.

Basically, what I want is an array that holds little structures that hold 3-10 strings in them. The array would be of size somewhere from 50-5,000 (expandable).

I was considering using a database, but that seems like overkill in this case. I was considering using a file that held JSON, but that just doesn't seem right (I think my server would have to load the file, parse the file, then return every time the cgi is called).

I'd like to be able to have PHP get something out of this persistent data structure in constant, fast time every time it's called.

I'm currently using just vanilla Apache and PHP.

Upvotes: 2

Views: 546

Answers (1)

flaschenpost
flaschenpost

Reputation: 2235

Even without a file APC can store those data! apc_fetch and apc_store. The only problem is that the data is restricted to one server, so as soon as you will have clusters or multiple servers they don't share the data. (http://www.php.net/manual/de/ref.apc.php)

If multiple servers are involved, memcached or redis are worth a check. Redis has built-in arrays.

Edit:

Check if json_encode/json_decode are as fast as serialize/unserialize for your scenario or even faster, jsonlib can be real fast. It removes some php-specific data, which is probably unnecessary for you (object names etc).

Edit2: If the server crashes, the plain apc-solution will lose all data. That is the reason you should also write it to a file if needed. apc is inside the apache process so it will be faster than memcached or redis.

Upvotes: 2

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