From fbfad76c03afe7538c67205ceb30825d9ce4fb07 Mon Sep 17 00:00:00 2001 From: Erik Johnston Date: Thu, 26 Jan 2017 16:30:37 +0000 Subject: Add comments --- synapse/storage/schema/delta/40/device_list_streams.sql | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) (limited to 'synapse/storage/schema') diff --git a/synapse/storage/schema/delta/40/device_list_streams.sql b/synapse/storage/schema/delta/40/device_list_streams.sql index d1051c6ddf..8348c143c3 100644 --- a/synapse/storage/schema/delta/40/device_list_streams.sql +++ b/synapse/storage/schema/delta/40/device_list_streams.sql @@ -13,7 +13,7 @@ * limitations under the License. */ - +-- Cache of remote devices. CREATE TABLE device_lists_remote_cache ( user_id TEXT NOT NULL, device_id TEXT NOT NULL, @@ -23,6 +23,8 @@ CREATE TABLE device_lists_remote_cache ( CREATE INDEX device_lists_remote_cache_id ON device_lists_remote_cache(user_id, device_id); +-- The last update we got for a user. Empty if we're not receiving updates for +-- that user. CREATE TABLE device_lists_remote_extremeties ( user_id TEXT NOT NULL, stream_id TEXT NOT NULL @@ -31,6 +33,7 @@ CREATE TABLE device_lists_remote_extremeties ( CREATE INDEX device_lists_remote_extremeties_id ON device_lists_remote_extremeties(user_id, stream_id); +-- Stream of device lists updates. Includes both local and remotes CREATE TABLE device_lists_stream ( stream_id BIGINT NOT NULL, user_id TEXT NOT NULL, @@ -40,6 +43,9 @@ CREATE TABLE device_lists_stream ( CREATE INDEX device_lists_stream_id ON device_lists_stream(stream_id, user_id); +-- The stream of updates to send to other servers. We keep at least one row +-- per user that was sent so that the prev_id for any new updates can be +-- calculated CREATE TABLE device_lists_outbound_pokes ( destination TEXT NOT NULL, stream_id BIGINT NOT NULL, -- cgit 1.4.1