When using many or very long entries of MIME-types that shoudl be gziped in gzip_types directives in nginx you might not be able to successfully reload the service and get this error message instead:
nginx: [emerg] could not build the test_types_hash, you should increase test_types_hash_bucket_size: 64
nginx: configuration file /etc/nginx/nginx.conf test failed
Option 1: Use gzip_types *;
If you don't care about which MIME type gets the gzip handling, just tell nginx that any MIME type should be gziped.
Especially for assets which might change, this is often the more sensible solution.
Option 2: Add
types_hash_bucket_size
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If you need to have only very specific, but still very long gzip_types you should just add
types_hash_bucket_size
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to the location that causes the issue and increase it to a value that satisfies your needs.