Bundle: Compression

To reduce the cost of I/O operations and reduce the size of the database on a disk, we have introduced the Compression bundle. Compression is only applied to documents, indexes are not compressed. This is because RavenDB is performing a lot of random reads from indexes, whereas with documents we almost always read/write the full content. Note that the compression process is fully transparent for the end-user.

How to enable compression

To activate compression server-wide, just add the Compression to the Raven/ActiveBundles configuration in the global configuration file or set up a new database with compression bundle turned on, using API or the Studio.

More on how to create a database with compression enabled using the Studio here.

		new DatabaseDocument
				Id = "CompressedDB",
				// Other configuration options omitted for simplicity
				Settings =
						// ...
						{ "Raven/ActiveBundles", "Compression" }

The above example demonstrates how to create a new database called CompressedDB with the Compression bundle enabled.


Activating the compression bundle is only supported for new databases. Activating or disabling compression on an already existing database will cause DB malfunction.