core: batch load queues for subscriptions with PostgreSQL client (#6272)

* core: batch load queues for subscriptions with PostgreSQL client

* update simplexmq

* fix, update simplexmq

* update query plans

src/Simplex/Chat/Options/Postgres.hs

@@ -42,7 +42,7 @@ chatDbOptsP _appDir defaultDbName = do
       ( long "pool-size"
           <> metavar "DB_POOL_SIZE"
           <> help "Database connection pool size"
-          <> value 1
+          <> value 10
           <> showDefault
       )
   dbCreateSchema <-
@@ -81,7 +81,7 @@ mobileDbOpts schemaPrefix connstr = do
     ChatDbOpts
       { dbConnstr,
         dbSchemaPrefix,
-        dbPoolSize = 1,
+        dbPoolSize = 10,
         dbCreateSchema = True
       }
 

src/Simplex/Chat/Store/SQLite/Migrations/agent_query_plans.txt

@@ -327,16 +327,6 @@ Plan:
 SEARCH r USING INTEGER PRIMARY KEY (rowid=?)
 SEARCH s USING INTEGER PRIMARY KEY (rowid=?)
 
-Query: 
-        SELECT
-          user_id, conn_id, conn_mode, smp_agent_version, enable_ntfs,
-          last_external_snd_msg_id, deleted, ratchet_sync_state, pq_support
-        FROM connections
-        WHERE conn_id = ?
-      
-Plan:
-SEARCH connections USING PRIMARY KEY (conn_id=?)
-
 Query: 
         SELECT DISTINCT
           s.xftp_host, s.xftp_port, s.xftp_key_hash
@@ -384,13 +374,13 @@ SEARCH s USING INTEGER PRIMARY KEY (rowid=?)
 USE TEMP B-TREE FOR DISTINCT
 
 Query: 
-        SELECT DISTINCT c.host, c.port, COALESCE(c.server_key_hash, s.key_hash)
+        SELECT DISTINCT c.conn_id, c.host, c.port, COALESCE(c.server_key_hash, s.key_hash)
         FROM commands c
         LEFT JOIN servers s ON s.host = c.host AND s.port = c.port
-        WHERE conn_id = ?
+        ORDER BY c.conn_id
       
 Plan:
-SEARCH c USING INDEX idx_commands_conn_id (conn_id=?)
+SCAN c USING INDEX idx_commands_conn_id
 SEARCH s USING PRIMARY KEY (host=? AND port=?) LEFT-JOIN
 USE TEMP B-TREE FOR DISTINCT
 
@@ -469,6 +459,15 @@ Plan:
 SEARCH s USING PRIMARY KEY (conn_id=? AND internal_snd_id=?)
 SEARCH m USING PRIMARY KEY (conn_id=? AND internal_id=?)
 
+Query: 
+        SELECT user_id, conn_id, conn_mode, smp_agent_version, enable_ntfs,
+          last_external_snd_msg_id, deleted, ratchet_sync_state, pq_support
+        FROM connections
+        WHERE conn_id = ? AND deleted = ?
+      
+Plan:
+SEARCH connections USING PRIMARY KEY (conn_id=?)
+
 Query: 
       DELETE FROM conn_confirmations
       WHERE conn_id = ?