nickva commented on code in PR #5014:
URL: https://github.com/apache/couchdb/pull/5014#discussion_r1554660160
##########
rel/overlay/etc/default.ini:
##########
@@ -930,3 +930,97 @@ url = {{nouveau_url}}
;max_objects = 10000
;max_idle = 600000
;enable = true
+
+[couch_scanner]
+; How often to check for configuration changes and start/stop plugins
+;interval_sec = 5
+
+; Minimum time to force a plugin to wait before running again after a crash
+;min_penalty_sec = 30
+
+; Maximum time to force a plugin to wait after repeated crashes (8 hours
default)
+;max_penalty_sec = 28800
+
+; If plugin runs successfully without crashing for this long, reset its
+; repeated error count
+;heal_threshold_sec = 300
+
+; Database processing rate limit. This will also be the rate at which design
+; documents are fetched. The rate is shared across all running plugins.
+;db_rate_limit = 50
+
+; Limits the rate at which plugins may open db shard files on a node. The
+; rate is shared across all running plugins.
+;shard_rate_limit = 50
Review Comment:
If a plugin is only interested in database names it wouldn't open shard at
all, it might return `[]` for `shards(...)` callback to indicate that. Then
only the db rate would apply. If a plugin uses the shards and just looks at
their sizes or doc ids then indicates to `skip` opening the doc, then only db
rate and shard open rate would apply but not the doc rate.
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