diff --git a/src/main/java/it/cavallium/dbengine/database/disk/PooledIndexSearcherManager.java b/src/main/java/it/cavallium/dbengine/database/disk/PooledIndexSearcherManager.java
index 5a1c17c..bb58c8b 100644
--- a/src/main/java/it/cavallium/dbengine/database/disk/PooledIndexSearcherManager.java
+++ b/src/main/java/it/cavallium/dbengine/database/disk/PooledIndexSearcherManager.java
@@ -61,6 +61,8 @@ public class PooledIndexSearcherManager {
 
 		this.cachedSnapshotSearchers = CacheBuilder.newBuilder()
 				.expireAfterWrite(queryRefreshDebounceTime)
+				// Max 3 cached non-main index writers
+				.maximumSize(3)
 				.build(new CacheLoader<>() {
 					@Override
 					public Mono<IndexSearcher> load(@NotNull LLSnapshot snapshot) {