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path: root/roomserver/storage/sqlite3/purge_statements.go
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Diffstat (limited to 'roomserver/storage/sqlite3/purge_statements.go')
-rw-r--r--roomserver/storage/sqlite3/purge_statements.go10
1 files changed, 9 insertions, 1 deletions
diff --git a/roomserver/storage/sqlite3/purge_statements.go b/roomserver/storage/sqlite3/purge_statements.go
index c7b4d27a..cb21515b 100644
--- a/roomserver/storage/sqlite3/purge_statements.go
+++ b/roomserver/storage/sqlite3/purge_statements.go
@@ -41,6 +41,11 @@ const purgePreviousEventsSQL = "" +
" SELECT event_nid FROM roomserver_events WHERE room_nid = $1" +
")"
+// This removes the majority of prev events and is way faster than the above.
+// The above query is still needed to delete the remaining prev events.
+const purgePreviousEvents2SQL = "" +
+ "DELETE FROM roomserver_previous_events AS rpe WHERE EXISTS(SELECT event_id FROM roomserver_events AS re WHERE room_nid = $1 AND re.event_id = rpe.previous_event_id)"
+
const purgePublishedSQL = "" +
"DELETE FROM roomserver_published WHERE room_id = $1"
@@ -64,6 +69,7 @@ type purgeStatements struct {
purgeInvitesStmt *sql.Stmt
purgeMembershipsStmt *sql.Stmt
purgePreviousEventsStmt *sql.Stmt
+ purgePreviousEvents2Stmt *sql.Stmt
purgePublishedStmt *sql.Stmt
purgeRedactionStmt *sql.Stmt
purgeRoomAliasesStmt *sql.Stmt
@@ -81,6 +87,7 @@ func PreparePurgeStatements(db *sql.DB, stateSnapshot *stateSnapshotStatements)
{&s.purgeMembershipsStmt, purgeMembershipsSQL},
{&s.purgePublishedStmt, purgePublishedSQL},
{&s.purgePreviousEventsStmt, purgePreviousEventsSQL},
+ {&s.purgePreviousEvents2Stmt, purgePreviousEvents2SQL},
{&s.purgeRedactionStmt, purgeRedactionsSQL},
{&s.purgeRoomAliasesStmt, purgeRoomAliasesSQL},
{&s.purgeRoomStmt, purgeRoomSQL},
@@ -114,7 +121,8 @@ func (s *purgeStatements) PurgeRoom(
s.purgeStateSnapshotEntriesStmt,
s.purgeInvitesStmt,
s.purgeMembershipsStmt,
- s.purgePreviousEventsStmt,
+ s.purgePreviousEvents2Stmt, // Fast purge the majority of events
+ s.purgePreviousEventsStmt, // Slow purge the remaining events
s.purgeEventJSONStmt,
s.purgeRedactionStmt,
s.purgeEventsStmt,