version 1.11.7
+2019-09-26 [version 1.11.7]
+ * [FEATURE] Added scrub_count config command.
+ * [FEATURE] Reflect immediately the changed scrub_count while scrubbing.
+ * [ENHANCE] New scrub execution to reduce CPU usage and cache lock duration.
+ * [ENHANCE] Consider the number of collection elements when do scan next.
+ * [ENHANCE] Reduce cache lock duration when evict/reclaim collection items.
+ * [ENHANCE] Define and use NULL bkrange to access all elements of b+tree.
+ * [ENHANCE] Reduce initial size of roottable and realloc as necessary.
+ * [FIX] Fixed invalid memory access in trim_copy().
+ * [FIX] Freed the response string buffer only when it exists.
+ * [FIX] Fixed memory leak when getting hostname by address.
+ * [TEST] Added code coverage test.
+ * [TEST] Added lop operation test on a large list collection.
+ * [INTERNAL] Added functions for getting all collection elements.
+ * [INTERNAL] Added change log generation macros for future use.
+ * [CLEANUP] Fixed cppcheck's errors and warnings.
+ * [CLEANUP] Devided store_item() into detailed store functions.
+ * [CLEANUP] Used global engine pointer instead of passing engine argument.
+ * [CLEANUP] Refactored a lot of code for readbility and others.
+
2019-06-05 [version 1.11.6]
* [FEATURE] Add long query detection for map collection.
* [FEATURE] Check cache_server_mapping ZK node with hostname.
