diff --git a/src/main/java/org/warp/filesponge/DataBlock.java b/src/main/java/org/warp/filesponge/DataBlock.java
index 6638d6e..dfd50f0 100644
--- a/src/main/java/org/warp/filesponge/DataBlock.java
+++ b/src/main/java/org/warp/filesponge/DataBlock.java
@@ -71,9 +71,9 @@ public final class DataBlock extends ResourceSupport<DataBlock, DataBlock> {
 	private final int length;
 	private final Buffer data;
 
-	public Send<Buffer> getData() {
+	public Buffer getDataCopy() {
 		assert data.isAccessible();
-		return data.copy().send();
+		return data.copy();
 	}
 
 	public Buffer getDataUnsafe() {
@@ -106,8 +106,8 @@ public final class DataBlock extends ResourceSupport<DataBlock, DataBlock> {
 		if (this.getLength() != other.getLength()) {
 			return false;
 		}
-		final Object this$data = this.getData();
-		final Object other$data = other.getData();
+		final Object this$data = this.getDataUnsafe();
+		final Object other$data = other.getDataUnsafe();
 		if (!Objects.equals(this$data, other$data)) {
 			return false;
 		}
@@ -119,13 +119,13 @@ public final class DataBlock extends ResourceSupport<DataBlock, DataBlock> {
 		int result = 1;
 		result = result * PRIME + this.getOffset();
 		result = result * PRIME + this.getLength();
-		final Object $data = this.getData();
+		final Object $data = this.getDataUnsafe();
 		result = result * PRIME + ($data == null ? 43 : $data.hashCode());
 		return result;
 	}
 
 	public String toString() {
-		return "DataBlock(offset=" + this.getOffset() + ", length=" + this.getLength() + ", data=" + this.getData() + ")";
+		return "DataBlock(offset=" + this.getOffset() + ", length=" + this.getLength() + ", data=" + this.getDataUnsafe() + ")";
 	}
 
 	@Override
diff --git a/src/main/java/org/warp/filesponge/DiskCache.java b/src/main/java/org/warp/filesponge/DiskCache.java
index 64e8a6f..e9b08f1 100644
--- a/src/main/java/org/warp/filesponge/DiskCache.java
+++ b/src/main/java/org/warp/filesponge/DiskCache.java
@@ -21,7 +21,9 @@ package org.warp.filesponge;
 import static org.warp.filesponge.FileSponge.BLOCK_SIZE;
 
 import io.netty5.buffer.api.Buffer;
+import io.netty5.buffer.api.Resource;
 import io.netty5.buffer.api.Send;
+import it.cavallium.dbengine.database.BufSupplier;
 import it.cavallium.dbengine.database.ColumnUtils;
 import it.cavallium.dbengine.database.LLDatabaseConnection;
 import it.cavallium.dbengine.database.LLDictionary;
@@ -87,45 +89,53 @@ public class DiskCache implements URLsDiskHandler, URLsWriter {
 		// Check if this cache should cache the url, otherwise do nothing
 		if (!shouldCache.test(url)) return Mono.empty();
 
-		Mono<Send<Buffer>> keyMono = Mono.fromCallable(() -> serializeUrl(url));
+		Mono<Buffer> keyMono = Mono.fromCallable(() -> serializeUrl(url));
 		return fileMetadata
 				.update(keyMono,
 						oldValue -> Objects.requireNonNullElseGet(oldValue,
 								() -> serializeMetadata(new DiskMetadata(metadata.size(),
 										BooleanArrayList.wrap(new boolean[DiskMetadata.getBlocksCount(metadata.size(), BLOCK_SIZE)])
-								)).receive()
+								))
 						),
 						UpdateReturnMode.NOTHING
 				)
 				.then();
 	}
 
-	private <T extends URL> Send<Buffer> serializeUrl(T url) {
+	private <T extends URL> Buffer serializeUrl(T url) {
 		@SuppressWarnings("unchecked")
 		URLSerializer<T> urlSerializer = (URLSerializer<T>) url.getSerializer();
 
 		int sizeHint = urlSerializer.getSerializedSizeHint();
 		if (sizeHint == -1) sizeHint = 64;
-		try (var buffer = db.getAllocator().allocate(sizeHint)) {
+		var buffer = db.getAllocator().allocate(sizeHint);
+		try {
 			try {
 				urlSerializer.serialize(url, buffer);
 			} catch (SerializationException ex) {
 				throw new IllegalStateException("Failed to serialize url", ex);
 			}
-			return buffer.send();
+			return buffer;
+		} catch (Throwable ex) {
+			buffer.close();
+			throw ex;
 		}
 	}
 
-	private Send<Buffer> serializeMetadata(DiskMetadata diskMetadata) {
+	private Buffer serializeMetadata(DiskMetadata diskMetadata) {
 		int sizeHint = diskMetadataSerializer.getSerializedSizeHint();
 		if (sizeHint == -1) sizeHint = 64;
-		try (var buffer = db.getAllocator().allocate(sizeHint)) {
+		var buffer = db.getAllocator().allocate(sizeHint);
+		try {
 			try {
 				diskMetadataSerializer.serialize(diskMetadata, buffer);
 			} catch (SerializationException ex) {
 				throw new IllegalStateException("Failed to serialize metadata", ex);
 			}
-			return buffer.send();
+			return buffer;
+		} catch (Throwable ex) {
+			buffer.close();
+			throw ex;
 		}
 	}
 
@@ -142,19 +152,16 @@ public class DiskCache implements URLsDiskHandler, URLsWriter {
 		// Check if this cache should cache the url, otherwise do nothing
 		if (!shouldCache.test(url)) return Mono.empty();
 
-		Mono<Send<Buffer>> urlKeyMono = Mono.fromCallable(() -> serializeUrl(url));
-		Mono<Send<Buffer>> blockKeyMono = Mono.fromCallable(() -> getBlockKey(url, dataBlock.getId()));
-		return Mono
-				.fromCallable(dataBlock::getData)
-				.subscribeOn(Schedulers.boundedElastic())
-				.flatMap(bytes_ -> Mono.using(
-						() -> bytes_,
-						bytes -> fileContent
-								.put(blockKeyMono, Mono.just(bytes), LLDictionaryResultType.VOID)
-								.doOnNext(Send::close)
+		Mono<Buffer> urlKeyMono = Mono.fromCallable(() -> serializeUrl(url));
+		Mono<Buffer> blockKeyMono = Mono.fromCallable(() -> getBlockKey(url, dataBlock.getId()));
+		return Mono.using(
+						() -> BufSupplier.of(dataBlock::getDataCopy),
+						bufSupplier -> fileContent
+								.put(blockKeyMono, Mono.fromSupplier(bufSupplier::get), LLDictionaryResultType.VOID)
+								.doOnNext(Resource::close)
 								.then(),
-						Send::close
-				))
+						BufSupplier::close
+				)
 				.then(fileMetadata.update(urlKeyMono, prevBytes -> {
 							@Nullable DiskMetadata result;
 							if (prevBytes != null) {
@@ -182,7 +189,7 @@ public class DiskCache implements URLsDiskHandler, URLsWriter {
 								result = null;
 							}
 							if (result != null) {
-								return serializeMetadata(result).receive();
+								return serializeMetadata(result);
 							} else {
 								return null;
 							}
@@ -210,7 +217,7 @@ public class DiskCache implements URLsDiskHandler, URLsWriter {
 							return fileContent
 									.get(null, blockKeyMono)
 									.map(dataToReceive -> {
-										try (var data = dataToReceive.receive()) {
+										try (var data = dataToReceive) {
 											int blockOffset = getBlockOffset(blockId);
 											int blockLength = data.readableBytes();
 											if (meta.size() != -1) {
@@ -230,11 +237,11 @@ public class DiskCache implements URLsDiskHandler, URLsWriter {
 				);
 	}
 
-	private Send<Buffer> getBlockKey(URL url, int blockId) {
-		try (var urlBytes = serializeUrl(url).receive()) {
+	private Buffer getBlockKey(URL url, int blockId) {
+		try (var urlBytes = serializeUrl(url)) {
 			Buffer blockIdBytes = this.db.getAllocator().allocate(Integer.BYTES);
 			blockIdBytes.writeInt(blockId);
-			return LLUtils.compositeBuffer(db.getAllocator(), urlBytes.send(), blockIdBytes.send()).send();
+			return LLUtils.compositeBuffer(db.getAllocator(), urlBytes.send(), blockIdBytes.send());
 		}
 	}
 
@@ -244,11 +251,11 @@ public class DiskCache implements URLsDiskHandler, URLsWriter {
 
 	@Override
 	public Mono<DiskMetadata> requestDiskMetadata(URL url) {
-		Mono<Send<Buffer>> urlKeyMono = Mono.fromCallable(() -> serializeUrl(url));
+		Mono<Buffer> urlKeyMono = Mono.fromCallable(() -> serializeUrl(url));
 		return fileMetadata
 				.get(null, urlKeyMono)
 				.map(prevBytesSend -> {
-					try (var prevBytes = prevBytesSend.receive()) {
+					try (var prevBytes = prevBytesSend) {
 						return deserializeMetadata(prevBytes);
 					}
 				});
@@ -262,17 +269,17 @@ public class DiskCache implements URLsDiskHandler, URLsWriter {
 
 	@Override
 	public Mono<Tuple2<Metadata, Flux<DataBlock>>> request(URL url) {
-		Mono<Send<Buffer>> urlKeyMono = Mono.fromCallable(() -> serializeUrl(url));
+		Mono<Buffer> urlKeyMono = Mono.fromCallable(() -> serializeUrl(url));
 		return Mono
 				.using(
 						() -> serializeUrl(url),
 						key -> fileMetadata.get(null, urlKeyMono),
-						Send::close
+						Resource::close
 				)
 				.map(serialized -> {
 					DiskMetadata diskMeta;
-					try (var serializedBuf = serialized.receive()) {
-						diskMeta = deserializeMetadata(serializedBuf);
+					try (serialized) {
+						diskMeta = deserializeMetadata(serialized);
 					}
 					var meta = diskMeta.asMetadata();
 					if (diskMeta.isDownloadedFully()) {