Add a basic README to synapse.storage

1 files changed, 13 insertions, 0 deletions

diff --git a/synapse/storage/README.md b/synapse/storage/README.md
new file mode 100644

index 0000000000..567ae785a7
--- /dev/null
+++ b/synapse/storage/README.md
@@ -0,0 +1,13 @@
+Storage Layer
+=============
+
+The storage layer is split up into multiple parts to allow Synapse to run
+against different configurations of databases (e.g. single or multiple
+databases). The `data_stores` are classes that talk directly to a single
+database and have associated schemas, background updates, etc. On top of those
+there are (or will be) classes that provide high level interfaces that combine
+calls to multiple `data_stores`.
+
+There are also schemas that get applied to every database, regardless of the
+data stores associated with them (e.g. the schema version tables), which are
+stored in `synapse.storage.schema`.