Socket error on read socket

I try to increase the timeout and read timeout from default 1 to 5, but still get this error.

The only solution is to flush the cache.

After flushing, it is 42623 now.

How large is your redis dataset? redis-cli dbsize

It shows “Could not connect to Redis at slowlog: No such file or directory”

What does redis-cli -s slowlog get 10 show?

OK. Below are the slow logs:

 1) 1) (integer) 2714
    2) (integer) 1767669302
    3) (integer) 38971
    4) 1) "ZREMRANGEBYSCORE"
       2) "site1-sitewp:redis-cache:metrics"
       3) "0"
       4) "1767665702"
 2) 1) (integer) 2713
    2) (integer) 1767668401
    3) (integer) 15643
    4) 1) "ZREMRANGEBYSCORE"
       2) "site2-sitewp:redis-cache:metrics"
       3) "0"
       4) "1767664801"
 3) 1) (integer) 2712
    2) (integer) 1767665706
    3) (integer) 29917
    4) 1) "ZREMRANGEBYSCORE"
       2) "site1-sitewp:redis-cache:metrics"
       3) "0"
       4) "1767662106"
 4) 1) (integer) 2711
    2) (integer) 1767664802
    3) (integer) 14958
    4) 1) "ZREMRANGEBYSCORE"
       2) "site2-sitewp:redis-cache:metrics"
       3) "0"
       4) "1767661202"
 5) 1) (integer) 2710
    2) (integer) 1767662104
    3) (integer) 32010
    4) 1) "ZREMRANGEBYSCORE"
       2) "site1-sitewp:redis-cache:metrics"
       3) "0"
       4) "1767658504"
 6) 1) (integer) 2709
    2) (integer) 1767661202
    3) (integer) 16217
    4) 1) "ZREMRANGEBYSCORE"
       2) "site2-sitewp:redis-cache:metrics"
       3) "0"
       4) "1767657602"
 7) 1) (integer) 2708
    2) (integer) 1767658508
    3) (integer) 48554
    4) 1) "ZREMRANGEBYSCORE"
       2) "site1-sitewp:redis-cache:metrics"
       3) "0"
       4) "1767654908"
 8) 1) (integer) 2707
    2) (integer) 1767657602
    3) (integer) 14377
    4) 1) "ZREMRANGEBYSCORE"
       2) "site2-sitewp:redis-cache:metrics"
       3) "0"
       4) "1767654002"
 9) 1) (integer) 2706
    2) (integer) 1767654909
    3) (integer) 26049
    4) 1) "ZREMRANGEBYSCORE"
       2) "site1-sitewp:redis-cache:metrics"
       3) "0"
       4) "1767651309"
10) 1) (integer) 2705
    2) (integer) 1767654002
    3) (integer) 15870
    4) 1) "ZREMRANGEBYSCORE"
       2) "site2-sitewp:redis-cache:metrics"
       3) "0"
       4) "1767650402"

The diagnostics log is:

Status: Connected
Client: PhpRedis (v6.0.2)
Drop-in: Valid
Disabled: No
Ping: 1
Errors: []
PhpRedis: 6.0.2
Relay: Not loaded
Predis: 2.4.0
Credis: Not loaded
PHP Version: 8.2.30
Plugin Version: 2.7.0
Redis Version: 3.2.12
Multisite: No
Metrics: Enabled
Metrics recorded: 15683
Filesystem: Writable
Global Prefix: "wp_"
Blog Prefix: "wp_"
Timeout: 1
Read Timeout: 1
Retry Interval: 
WP_REDIS_DATABASE: 0
WP_REDIS_PREFIX: "site1"
WP_REDIS_PLUGIN_PATH: "/home/username/public_html/wp-content/plugins/redis-cache"
Global Groups: [
    "blog-details",
    "blog-id-cache",
    "blog-lookup",
    "global-posts",
    "networks",
    "rss",
    "sites",
    "site-details",
    "site-lookup",
    "site-options",
    "site-transient",
    "users",
    "useremail",
    "userlogins",
    "usermeta",
    "user_meta",
    "userslugs",
    "redis-cache",
    "blog_meta",
    "image_editor",
    "network-queries",
    "site-queries",
    "theme_files",
    "translation_files",
    "user-queries"
]
Ignored Groups: [
    "counts",
    "plugins",
    "theme_json",
    "themes",
    "WPForms_Entry_Handler"
]
Unflushable Groups: []
Groups Types: {
    "blog-details": "global",
    "blog-id-cache": "global",
    "blog-lookup": "global",
    "global-posts": "global",
    "networks": "global",
    "rss": "global",
    "sites": "global",
    "site-details": "global",
    "site-lookup": "global",
    "site-options": "global",
    "site-transient": "global",
    "users": "global",
    "useremail": "global",
    "userlogins": "global",
    "usermeta": "global",
    "user_meta": "global",
    "userslugs": "global",
    "redis-cache": "global",
    "blog_meta": "global",
    "image_editor": "global",
    "network-queries": "global",
    "site-queries": "global",
    "theme_files": "global",
    "translation_files": "global",
    "user-queries": "global",
    "counts": "ignored",
    "plugins": "ignored",
    "theme_json": "ignored",
    "themes": "ignored",
    "WPForms_Entry_Handler": "ignored"
}
Drop-ins: [
    "advanced-cache.php v by ",
    "maintenance.php v by ",
    "Redis Object Cache Drop-In v2.7.0 by Till Krüss"
]

Thank you.

In the past, I have already tried to increase both the timeout and read timeout to 5 seconds. But that does not work. The only solution is flush the cache. And when I flush the cache for the first time, I will also get an error that seems your plugin cannot connect to the Redis server. But soon it becames OK.