Problems under high load about yac HOT 4 CLOSED

Hey, actually, this is expected behaviors, yac is a lockless cache, that is why it is so fast and also has some issues like this.

but this(the warnings you saw) also is a protection for preventing wrong data goes to user script.

to reduce this warnings: you need try to avoid or reduce the probability of multiple processes seting one key. increase the slots size, or you can increase the crc bytes(I will add a configuration in php.ini for this later).

thanks

from yac.

Hi, as it is a warning - I wonder if I can catch it somehow and try to re-get the cache entry?

from yac.

A "hack" that would allow you to catch the error is to set the error handler to a custom function that throws the error as an exception. Then directly after the cache get you can restore the error handler to it's previous function.

This will allow you to catch the warning like an exception and either retry or re-fetch it.

from yac.

have a look at：https://github.com/yiisoft/yii2/blob/master/framework/base/ErrorHandler.php

from yac.