Removed Redis parser_class reference from docs.

[r3a70]

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ticket-[number]

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Provide a concise overview of the issue or rationale behind the proposed changes.

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[shangxiao]

Interesting. redis-py still has a parser_class option but the classes seem to have been made private from 4.4.x onwards as they are all prefixed with "_" and the parsers section was removed from the README.md.

I don't think it's helpful to remove the hyperlink, rather someone with more knowledge could suggest a correct link.

[r3a70]

unfortunately there is not link that describe the parser_class (i found one but it's for another third-party lib)

[r3a70]

I think it's okay to remove it when redis-py removes the documentation for the parser classes. The redis-py documentation says that redis-py automatically uses the hiredis-py parser class if you install hiredis-py. This tells us that we have two options:

1. Install it and let redis use it automatically.
2. Don't install it and let redis use its own parser.

[felixxm]

Using a custom parser class is so niche that it's not even documented in redis-py docs. I'd remove it:

diff --git a/docs/topics/cache.txt b/docs/topics/cache.txt
index 3d67f9b03a..1fe9d335fb 100644
--- a/docs/topics/cache.txt
+++ b/docs/topics/cache.txt
@@ -562,10 +562,8 @@ flag on the connection's socket::
     }
 
 Here's an example configuration for a ``redis`` based backend that selects
-database ``10`` (by default Redis ships with 16 logical databases), specifies a
-`parser class`_ (``redis.connection.HiredisParser`` will be used by default if
-the ``hiredis-py`` package is installed), and sets a custom `connection pool
-class`_ (``redis.ConnectionPool`` is used by default)::
+database ``10`` (by default Redis ships with 16 logical databases), and sets a
+custom `connection pool class`_ (``redis.ConnectionPool`` is used by default)::
 
     CACHES = {
         "default": {
@@ -573,13 +571,11 @@ class`_ (``redis.ConnectionPool`` is used by default)::
             "LOCATION": "redis://127.0.0.1:6379",
             "OPTIONS": {
                 "db": "10",
-                "parser_class": "redis.connection.PythonParser",
                 "pool_class": "redis.BlockingConnectionPool",
             },
         }
     }
 
-.. _`parser class`: https://github.com/redis/redis-py#parsers
 .. _`connection pool class`: https://github.com/redis/redis-py#connection-pools
 
 .. _the-per-site-cache:

[felixxm]

@r3a70 Do you have time to keep working on this?

[r3a70]

@felixxm can you explain what i should be to do ?

[felixxm]

I left a diff with a suggestion in my previous comment.

[r3a70]

ok i work on it.

[sarahboyce]

Thank you for this @r3a70