Allow usage check to be configurable (#6006)

docs/config/README.md

@@ -99,6 +99,18 @@ By default, parity for objects with standard storage class is set to `N/2`, and
 |``exclude`` | _[]string_ | List of wildcard patterns for prefixes to exclude from cache |
 |``expiry`` | _int_ | Days to cache expiry |
 
+### Usage
+|Field|Type|Description|
+|:---|:---|:---|
+|``interval``| _string_ | Valid usage check interval duration string is a signed sequence of decimal numbers, each with optional fraction and a unit suffix, such as "2h45m". Valid time units are "ns", "us", "ms", "s", "m", "h". Minimum supported value is '2h'.|
+
+Example: Run usage check every 4 hours 3 minutes 10 seconds.
+
+```sh
+export MINIO_USAGE_CHECK_INTERVAL="4h3m10s"
+minio server /data
+```
+
 #### Notify
 |Field|Type|Description|
 |:---|:---|:---|

docs/config/config.sample.json

@@ -1,5 +1,5 @@
 {
-    "version": "22",
+    "version": "24",
     "credential": {
         "accessKey": "USWUXHGYZQYFYFFIT3RE",
         "secretKey": "MOJRH0mkL1IPauahWITSVvyDrQbEEIwljvmxdq03"
@@ -16,6 +16,9 @@
         "expiry": 90,
         "exclude": []
     },
+    "usage": {
+        "interval": "3h"
+    }
     "notify": {
         "amqp": {
             "1": {
@@ -120,4 +123,4 @@
             }
         }
     }
-}
+}