add indexes to speed up db

app/models.py

@@ -818,16 +818,16 @@ class CommunityBan(db.Model):
 
 class UserNote(db.Model):
     id = db.Column(db.Integer, primary_key=True)
-    user_id = db.Column(db.Integer, db.ForeignKey('user.id'))
+    user_id = db.Column(db.Integer, db.ForeignKey('user.id'), index=True)
-    target_id = db.Column(db.Integer, db.ForeignKey('user.id'))
+    target_id = db.Column(db.Integer, db.ForeignKey('user.id'), index=True)
     body = db.Column(db.Text)
     created_at = db.Column(db.DateTime, default=utcnow)
 
 
 class UserBlock(db.Model):
     id = db.Column(db.Integer, primary_key=True)
-    blocker_id = db.Column(db.Integer, db.ForeignKey('user.id'))
+    blocker_id = db.Column(db.Integer, db.ForeignKey('user.id'), index=True)
-    blocked_id = db.Column(db.Integer, db.ForeignKey('user.id'))
+    blocked_id = db.Column(db.Integer, db.ForeignKey('user.id'), index=True)
     created_at = db.Column(db.DateTime, default=utcnow)
 
 
@@ -845,7 +845,7 @@ class Interest(db.Model):
 class CommunityJoinRequest(db.Model):
     id = db.Column(db.Integer, primary_key=True)
     user_id = db.Column(db.Integer, db.ForeignKey('user.id'))
-    community_id = db.Column(db.Integer, db.ForeignKey('community.id'))
+    community_id = db.Column(db.Integer, db.ForeignKey('community.id'), index=True)
 
 
 class UserFollowRequest(db.Model):
@@ -856,9 +856,9 @@ class UserFollowRequest(db.Model):
 
 class PostVote(db.Model):
     id = db.Column(db.Integer, primary_key=True)
-    user_id = db.Column(db.Integer, db.ForeignKey('user.id'))
+    user_id = db.Column(db.Integer, db.ForeignKey('user.id'), index=True)
     author_id = db.Column(db.Integer, db.ForeignKey('user.id'))
-    post_id = db.Column(db.Integer, db.ForeignKey('post.id'))
+    post_id = db.Column(db.Integer, db.ForeignKey('post.id'), index=True)
     effect = db.Column(db.Float, index=True)
     created_at = db.Column(db.DateTime, default=utcnow)
     post = db.relationship('Post', foreign_keys=[post_id])
@@ -866,9 +866,9 @@ class PostVote(db.Model):
 
 class PostReplyVote(db.Model):
     id = db.Column(db.Integer, primary_key=True)
-    user_id = db.Column(db.Integer, db.ForeignKey('user.id'))   # who voted
+    user_id = db.Column(db.Integer, db.ForeignKey('user.id'), index=True)   # who voted
     author_id = db.Column(db.Integer, db.ForeignKey('user.id')) # the author of the reply voted on - who's reputation is affected
-    post_reply_id = db.Column(db.Integer, db.ForeignKey('post_reply.id'))
+    post_reply_id = db.Column(db.Integer, db.ForeignKey('post_reply.id'), index=True)
     effect = db.Column(db.Float)
     created_at = db.Column(db.DateTime, default=utcnow)
 
@@ -892,7 +892,7 @@ class Filter(db.Model):
     filter_posts = db.Column(db.Boolean, default=True)
     filter_replies = db.Column(db.Boolean, default=False)
     hide_type = db.Column(db.Integer, default=0)    # 0 = hide with warning, 1 = hide completely
-    user_id = db.Column(db.Integer, db.ForeignKey('user.id'))
+    user_id = db.Column(db.Integer, db.ForeignKey('user.id'), index=True)
     expire_after = db.Column(db.Date)
     keywords = db.Column(db.String(500))
 
@@ -919,7 +919,7 @@ class Notification(db.Model):
     title = db.Column(db.String(50))
     url = db.Column(db.String(512))
     read = db.Column(db.Boolean, default=False)
-    user_id = db.Column(db.Integer, db.ForeignKey('user.id'))       # who the notification should go to
+    user_id = db.Column(db.Integer, db.ForeignKey('user.id'), index=True)       # who the notification should go to
     author_id = db.Column(db.Integer, db.ForeignKey('user.id'))     # the person who caused the notification to happen
     created_at = db.Column(db.DateTime, default=utcnow)
 

migrations/versions/86b6fd708bd0_index_all_the_things.py

@@ -0,0 +1,76 @@
+"""index all the things
+
+Revision ID: 86b6fd708bd0
+Revises: a4be1b198b0f
+Create Date: 2024-01-24 21:17:10.102368
+
+"""
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision = '86b6fd708bd0'
+down_revision = 'a4be1b198b0f'
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('community_join_request', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_community_join_request_community_id'), ['community_id'], unique=False)
+
+    with op.batch_alter_table('filter', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_filter_user_id'), ['user_id'], unique=False)
+
+    with op.batch_alter_table('notification', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_notification_user_id'), ['user_id'], unique=False)
+
+    with op.batch_alter_table('post_reply_vote', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_post_reply_vote_post_reply_id'), ['post_reply_id'], unique=False)
+        batch_op.create_index(batch_op.f('ix_post_reply_vote_user_id'), ['user_id'], unique=False)
+
+    with op.batch_alter_table('post_vote', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_post_vote_post_id'), ['post_id'], unique=False)
+        batch_op.create_index(batch_op.f('ix_post_vote_user_id'), ['user_id'], unique=False)
+
+    with op.batch_alter_table('user_block', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_user_block_blocked_id'), ['blocked_id'], unique=False)
+        batch_op.create_index(batch_op.f('ix_user_block_blocker_id'), ['blocker_id'], unique=False)
+
+    with op.batch_alter_table('user_note', schema=None) as batch_op:
+        batch_op.create_index(batch_op.f('ix_user_note_target_id'), ['target_id'], unique=False)
+        batch_op.create_index(batch_op.f('ix_user_note_user_id'), ['user_id'], unique=False)
+
+    # ### end Alembic commands ###
+
+
+def downgrade():
+    # ### commands auto generated by Alembic - please adjust! ###
+    with op.batch_alter_table('user_note', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_user_note_user_id'))
+        batch_op.drop_index(batch_op.f('ix_user_note_target_id'))
+
+    with op.batch_alter_table('user_block', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_user_block_blocker_id'))
+        batch_op.drop_index(batch_op.f('ix_user_block_blocked_id'))
+
+    with op.batch_alter_table('post_vote', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_post_vote_user_id'))
+        batch_op.drop_index(batch_op.f('ix_post_vote_post_id'))
+
+    with op.batch_alter_table('post_reply_vote', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_post_reply_vote_user_id'))
+        batch_op.drop_index(batch_op.f('ix_post_reply_vote_post_reply_id'))
+
+    with op.batch_alter_table('notification', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_notification_user_id'))
+
+    with op.batch_alter_table('filter', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_filter_user_id'))
+
+    with op.batch_alter_table('community_join_request', schema=None) as batch_op:
+        batch_op.drop_index(batch_op.f('ix_community_join_request_community_id'))
+
+    # ### end Alembic commands ###