How to solve the problem that phpcms cache is not updated

How to solve the problem that phpcms cache is not updated

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I am doing one recently Maintenance of previous projects, let me talk about this project. I did some secondary development of phpcms (recommendedphpcms learning). I wrote a script to generate columns independently, which resulted in a large number of columns being added after running for a period of time. . Yesterday I added a few more columns, but suddenly I found that I couldn't update the cache.

When updating, only two lines of prompts are displayed. I went to update the column cache again. Oops, all the data came out. I scrolled to the bottom of the displayed SQL statement and saw - "MySQL server has gone away". It turned out that the cache was full.

Solution:

You need to configure themax_allowed_packetvalue in themy.inifile of mysql.

I am using wamp5, and there is no max_allowed_packet attribute in my.ini by default. I can only add it myself. I checked and the default is 1M. Generally, everyone sets it to 16M. Then add a "max_allowed_packet=16M" at the end of the file and it's OK. Now restart the server and update the cache. Is it completely normal?

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