Introduce logjam.appender.default-event-size configuration option

Author: vemv

Diff for: CHANGELOG.md

@@ -2,6 +2,8 @@
 
 ## master (unreleased)
 
+* Introduce `logjam.appender.default-event-size` configuration option.
+
 ## 0.2.0 (2024-01-04)
 
 * [#8](https://github.com/clojure-emacs/logjam/issues/8): Introduce Timbre compatibility.

Diff for: README.md

@@ -108,6 +108,14 @@ like:
 (repl/shutdown)
 ```
 
+## Configuration options
+
+The following options can be set as Java system properties:
+
+* `logjam.appender.default-event-size`
+  * The default maximum number of events that can be captured by a given appender.
+  * Default: 100000
+
 ## Development
 
 #### Makefile

Diff for: src/logjam/appender.clj

@@ -4,8 +4,9 @@
   (:require [logjam.event :as event]))
 
 (def ^:private default-size
-  "The default number of events captured by an appender."
-  100000)
+  "The default maximum number of events that can be captured by a given appender."
+  (or (some-> (System/getProperty "logjam.appender.default-event-size") Long/parseLong)
+      100000))
 
 (def ^:private default-threshold
   "The default threshold in percentage after which log events are cleaned up.