Improve follows table indexes

Closes ThinkUpLLC#472
boonebgorges · Mar 7, 2011 · 433df53 · 433df53
1 parent 878b5ec
commit 433df53
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Showing 2 changed files with 14 additions and 4 deletions.
diff --git a/webapp/install/sql/build-db_mysql.sql b/webapp/install/sql/build-db_mysql.sql
@@ -1,6 +1,6 @@
 -- 
 -- ThinkUp Database Creation Script
--- Auto-generated by thinkup/extras/scripts/migratedb script on 2011-01-27
+-- Auto-generated by thinkup/extras/scripts/migratedb script on 2011-03-07
 --
 
 ALTER DATABASE DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;
@@ -55,8 +55,9 @@ CREATE TABLE tu_follows (
   active int(11) NOT NULL DEFAULT '1',
   network varchar(20) NOT NULL DEFAULT 'twitter',
   debug_api_call varchar(255) NOT NULL,
-  UNIQUE KEY user_id (user_id,follower_id,network),
-  KEY active (active)
+  UNIQUE KEY user_id (network,follower_id,user_id),
+  UNIQUE KEY network (network,last_seen),
+  KEY active (network,active)
 ) ENGINE=MyISAM DEFAULT CHARSET=utf8;
 
 --
@@ -288,7 +289,7 @@ CREATE TABLE tu_users (
 ) ENGINE=MyISAM DEFAULT CHARSET=utf8;
 
 
--- Dump completed on 2011-01-27 13:25:28
+-- Dump completed on 2011-03-07  9:55:25
 
 --
 -- Insert DB Version

diff --git a/webapp/install/sql/mysql_migrations/2011-03-07_improve_follows_indexes.sql b/webapp/install/sql/mysql_migrations/2011-03-07_improve_follows_indexes.sql
@@ -0,0 +1,9 @@
+--
+-- Speed up queries on the follows table with better indexes
+--
+
+ALTER TABLE  tu_follows DROP INDEX  user_id, ADD UNIQUE  user_id (network, follower_id, user_id);
+
+ALTER TABLE  tu_follows DROP INDEX  active, ADD INDEX  active (network,  active);
+
+ALTER TABLE  tu_follows ADD UNIQUE (network, last_seen);