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Every time I call get_flag, a remote call is made.

One possibility is that you have streaming mode disabled and your feature’s TTL is set to 0. We do not recommend disabling streaming unless you are using PHP. If you do disable streaming mode, we recommend setting the TTL to 5 minutes in production environments.

If you’re using PHP, you may need to configure a custom HTTP cache provider as described in the PHP SDK Reference. PHP’s shared-nothing architecture means that the in-memory HTTP cache will be reset on every request, which means that almost every flag request will require a remote call. Using a Memcache or Redis-backed cache is the best solution.

 
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