I have a php function which gets called when someone visits POST www.example.com/webhook
. However, the external service which I cannot control, sometimes calls this url twice in rapid succession, messing with my logic since the webhook persists stuff in the database which takes a few ms to complete.
In other words, when the second request comes in (which can not be ignored), the first request is likely not completed yet however I need this to be completed in the order it came in.
So I've created a little hack in Laravel which should "throttle" the execution with 5 seconds in between. It seems to work most of the time. However an error in my code or some other oversight, does not make this solution work everytime.
function myWebhook() {
// Check if cache value (defaults to 0) and compare with current time.
while(Cache::get('g2a_webhook_timestamp', 0) + 5 > Carbon::now()->timestamp) {
// Postpone execution.
sleep(1);
}
// Create a cache value (file storage) that stores the current
Cache::put('g2a_webhook_timestamp', Carbon::now()->timestamp, 1);
// Execute rest of code ...
}
Anyone perhaps got a watertight solution for this issue?