Make level 6 default for cache compression.
@@ -228,8 +228,8 @@ summary.cache.compression.type enum {NONE, LZ4, ZSTD} default=LZ4
## Control compression level of the summary while in cache.
## LZ4 has normal range 1..9 while ZSTD has range 1..19
-## 9 is a reasonable default for both
-summary.cache.compression.level int default=9
+## 6 is a default for lz4 to prioritize speed.
+summary.cache.compression.level int default=6
## Control if cache entry is updated or ivalidated when changed.
summary.cache.update_strategy enum {INVALIDATE, UPDATE} default=INVALIDATE
