add limitoverwrites option per bucket (#466)

- Feature: Added global zenserver option `--cache-bucket-limit-overwrites` controlling Whether to require policy flag pattern before allowing overwrites or not. Default `false` = overwrites always allowed
- Feature: Add per bucket cache configuration option `limitoverwrites` (Lua options file only)

        cache = {
            bucket = {  -- This is the default for all namespaces
                limitoverwrites = true
            },
            buckets = { -- Here you can add matching per bucket name (matches accross namespaces)
                iostorecompression = {
                  limitoverwrites = false
                },
            },
        }

1 files changed, 1 insertions, 1 deletions

diff --git a/src/zenserver/config.h b/src/zenserver/config.h
index 7d90aa4c1..4a022a807 100644
--- a/src/zenserver/config.h
+++ b/src/zenserver/config.h
@@ -125,6 +125,7 @@ struct ZenStructuredCacheBucketConfig
 	uint32_t PayloadAlignment	   = 1u << 4;
 	uint64_t MemCacheSizeThreshold = 1 * 1024;
 	uint64_t LargeObjectThreshold  = 128 * 1024;
+	bool	 LimitOverwrites	   = false;
 };
 
 struct ZenStructuredCacheConfig
@@ -132,7 +133,6 @@ struct ZenStructuredCacheConfig
 	bool																Enabled			 = true;
 	bool																WriteLogEnabled	 = false;
 	bool																AccessLogEnabled = false;
-	bool																LimitOverwrites	 = false;
 	std::vector<std::pair<std::string, ZenStructuredCacheBucketConfig>> PerBucketConfigs;
 	ZenStructuredCacheBucketConfig										BucketConfig;
 	uint64_t															MemTargetFootprintBytes = 512 * 1024 * 1024;