jeantil commented on a change in pull request #476:
URL: https://github.com/apache/james-project/pull/476#discussion_r647352874
##########
File path:
mailbox/cassandra/src/main/java/org/apache/james/mailbox/cassandra/modules/CassandraMailboxModule.java
##########
@@ -42,7 +42,8 @@
.comment("Holds the mailboxes information.")
.options(options -> options
.caching(SchemaBuilder.KeyCaching.ALL,
-
SchemaBuilder.rows(CassandraConstants.DEFAULT_CACHED_ROW_PER_PARTITION)))
+
SchemaBuilder.rows(CassandraConstants.DEFAULT_CACHED_ROW_PER_PARTITION))
+ .compressionOptions(SchemaBuilder.lz4().withChunkLengthInKb(8)))
Review comment:
how did you come to choose `8` Kb ?
is it based on BufferedReader's defaultCharBufferSize to align with memory
page size or is based on the estimated size of a mailbox row ?
(https://stackoverflow.com/questions/37404068/why-is-the-default-char-buffer-size-of-bufferedreader-8192)
a comment would be nice :D
(if the answer is size of a mailbox row, the same question applies to all
the following `8` that appear in the PR)
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