[BUG] cache_invalidate errors when running magento cache:clean

[acashley]

🐛 Bug report

Current Behavior

When clearing the cache, the following cache_invalidate debug output is observed in build logs:

/bin/php magento cache:clean
main.DEBUG: cache_invalidate:  {"method":"GET","url":"http:/","invalidateInfo":{"tags":["FPC"],"mode":"matchingTag"}} []
main.DEBUG: cache_invalidate:  {"method":"GET","url":"http:/","invalidateInfo":{"tags":["CONFIG"],"mode":"matchingTag"}} []
main.DEBUG: cache_invalidate:  {"method":"GET","url":"http:/","invalidateInfo":{"tags":["LAYOUT_GENERAL_CACHE_TAG"],"mode":"matchingTag"}} []
main.DEBUG: cache_invalidate:  {"method":"GET","url":"http:/","invalidateInfo":{"tags":["BLOCK_HTML"],"mode":"matchingTag"}} []
main.DEBUG: cache_invalidate:  {"method":"GET","url":"http:/","invalidateInfo":{"tags":["COLLECTION_DATA"],"mode":"matchingTag"}} []
main.DEBUG: cache_invalidate:  {"method":"GET","url":"http:/","invalidateInfo":{"tags":["REFLECTION"],"mode":"matchingTag"}} []
main.DEBUG: cache_invalidate:  {"method":"GET","url":"http:/","invalidateInfo":{"tags":["DB_DDL"],"mode":"matchingTag"}} []
main.DEBUG: cache_invalidate:  {"method":"GET","url":"http:/","invalidateInfo":{"tags":["COMPILED_CONFIG"],"mode":"matchingTag"}} []
main.DEBUG: cache_invalidate:  {"method":"GET","url":"http:/","invalidateInfo":{"tags":["EAV"],"mode":"matchingTag"}} []
main.DEBUG: cache_invalidate:  {"method":"GET","url":"http:/","invalidateInfo":{"tags":["CUSTOMER_NOTIFICATION"],"mode":"matchingTag"}} []
main.DEBUG: cache_invalidate:  {"method":"GET","url":"http:/","invalidateInfo":{"tags":["INTEGRATION"],"mode":"matchingTag"}} []
main.DEBUG: cache_invalidate:  {"method":"GET","url":"http:/","invalidateInfo":{"tags":["INTEGRATION_API_CONFIG"],"mode":"matchingTag"}} []
main.DEBUG: cache_invalidate:  {"method":"GET","url":"http:/","invalidateInfo":{"tags":["FPC"],"mode":"matchingTag"}} []
main.DEBUG: cache_invalidate:  {"method":"GET","url":"http:/","invalidateInfo":{"tags":["WEBSERVICE"],"mode":"matchingTag"}} []
main.DEBUG: cache_invalidate:  {"method":"GET","url":"http:/","invalidateInfo":{"tags":["TRANSLATE"],"mode":"matchingTag"}} []
15:35:40 Cleaned cache types:
15:35:40 config
15:35:40 layout
15:35:40 block_html
15:35:40 collections
15:35:40 reflection
15:35:40 db_ddl
15:35:40 compiled_config
15:35:40 eav
15:35:40 customer_notification
15:35:40 config_integration
15:35:40 config_integration_api
15:35:40 full_page
15:35:40 config_webservice
15:35:40 translate
15:35:40 vertex

Expected Behavior

Expect not to see these debug output/errors.

Minimal reproduction of the problem with instructions

1. Install magento2-stdlogging module
2. Run: /bin/php magento cache:clean

What is the motivation / use case for changing the behavior?

Not sure why this output is logged now? Looks like the URL mentioned is malformed: GET","url":"http:/"
This output was not logged before installation of magento2-stdlogging module and disappears upon removal of the module.

Environment

magento2-stdlogging version: 1.3.8
Magento version: 2.4.2
PHP Version version: 7.4 

Others:
CentOS 7
nginx

[damienwebdev]

@acashley thanks for the report. I think this is a result of Magento's native cache.log. I've long wanted to remove it (it is incredibly annoying). I'll see if I can figure out docs on how to disable this log.

I don't think disabling it automatically is in the scope of this particular repo, but it's obnoxious enough that I think most people want to know how to disable it.

[damienwebdev]

@acashley see https://devdocs.magento.com/guides/v2.4/config-guide/cli/logging.html#to-disable-debug-logging

bin/magento setup:config:set --enable-debug-logging=false

Let me know if this works for you. In a production environment, this should be off anyways.

But, locally, this is what I use to disable the cache logs.

[acashley]

@damienwebdev thanks for your quick reply!

Interesting, I see in the docs referenced that the debugging should be disabled by default in production mode, but I am still seeing this output in both developer and production modes.

By default, Magento writes to the debug log (<install_directory>/var/log/debug.log) when it is in default or develop mode, but not when it is in production mode.