merge disk and memory layers (#493)

- Feature: Added `--cache-memlayer-sizethreshold` option to zenserver to control at which size cache entries get cached in memory
- Changed: Merged cache memory layer with cache disk layer to reduce memory and cpu overhead

1 files changed, 11 insertions, 0 deletions

diff --git a/src/zenserver/config.cpp b/src/zenserver/config.cpp
index e08d36583..81b1dcfe2 100644
--- a/src/zenserver/config.cpp
+++ b/src/zenserver/config.cpp
@@ -807,6 +807,9 @@ ParseConfigFile(const std::filesystem::path& Path,
 						 ServerOptions.StructuredCacheConfig.EnableReferenceCaching,
 						 "cache-reference-cache-enabled");
 
+	LuaOptions.AddOption("cache.memlayer.sizethreshold"sv,
+						 ServerOptions.StructuredCacheConfig.MemCacheSizeThreshold,
+						 "cache-memlayer-sizethreshold");
 	LuaOptions.AddOption("cache.memlayer.targetfootprint"sv,
 						 ServerOptions.StructuredCacheConfig.MemTargetFootprintBytes,
 						 "cache-memlayer-targetfootprint");
@@ -1182,6 +1185,14 @@ ParseCliOptions(int argc, char* argv[], ZenServerOptions& ServerOptions)
 					   cxxopts::value<bool>(ServerOptions.StructuredCacheConfig.EnableReferenceCaching)->default_value("false"),
 					   "");
 
+	options.add_option(
+		"cache",
+		"",
+		"cache-memlayer-sizethreshold",
+		"The largest size of a cache entry that may be cached in memory. Default set to 1024 (1 Kb). Set to 0 to disable memory caching.",
+		cxxopts::value<uint64_t>(ServerOptions.StructuredCacheConfig.MemCacheSizeThreshold)->default_value("1024"),
+		"");
+
 	options.add_option("cache",
 					   "",
 					   "cache-memlayer-targetfootprint",