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First batch of database indexes

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Added in support of Issue #31, Database Performance Improvements. Note
creation of 1.2.12 db patch script - may need renaming or other special
treatment when merging this branch.
This commit is contained in:
Mark Davies 2014-12-03 15:49:01 +00:00 committed by Florian Schlichting
parent 1fe5d24d9f
commit 0797e8233e
2 changed files with 30 additions and 3 deletions
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11
dba/davical.sql
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@ -115,8 +115,9 @@ CREATE TABLE collection (
description TEXT DEFAULT '',
UNIQUE(user_no,dav_name)
);
ALTER TABLE collection ADD CONSTRAINT unique_path UNIQUE (dav_name);
CREATE INDEX collection_dav_name_idx ON collection (dav_name);
-- The main event. Where we store the things the calendar throws at us.
CREATE TABLE caldav_data (
@ -135,6 +136,8 @@ CREATE TABLE caldav_data (
PRIMARY KEY ( user_no, dav_name )
);
CREATE INDEX caldav_data_collection_id_fkey ON caldav_data(collection_id);
CREATE INDEX caldav_data_dav_name_idx ON caldav_data (dav_name);
-- The parsed calendar item. Here we have pulled those events/todos/journals apart somewhat.
CREATE TABLE calendar_item (
@ -175,7 +178,7 @@ CREATE TABLE calendar_item (
PRIMARY KEY ( user_no, dav_name )
);
CREATE INDEX calendar_item_collection_id_fkey ON calendar_item(collection_id);
CREATE INDEX calendar_item_dav_name_idx ON calendar_item (dav_name);
-- Each user can be related to each other user. This mechanism can also
@ -311,6 +314,8 @@ CREATE TABLE sync_tokens (
collection_id INT8 REFERENCES collection(collection_id) ON DELETE CASCADE ON UPDATE CASCADE,
modification_time TIMESTAMP WITH TIME ZONE DEFAULT current_timestamp
);
CREATE INDEX sync_tokens_collection_idx ON sync_tokens (collection_id);
CREATE TABLE sync_changes (
sync_time TIMESTAMP WITH TIME ZONE DEFAULT current_timestamp,
@ -444,4 +449,4 @@ $$ LANGUAGE plpgsql ;
ALTER TABLE dav_binding ADD CONSTRAINT "dav_name_does_not_exist"
CHECK (NOT real_path_exists(dav_name));
SELECT new_db_revision(1,2,11, 'Novembre' );
SELECT new_db_revision(1,2,12, 'Decembre' );

22
dba/patches/1.2.12.sql Normal file
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@ -0,0 +1,22 @@
-- Apply database indexes in support of Issue #31 Database performance improvements
BEGIN;
SELECT check_db_revision(1,2,11);
-- These two indexes improves performance of the stored function write_sync_change(), which is called on every calendar item update
CREATE INDEX sync_tokens_collection_idx ON sync_tokens (collection_id);
CREATE INDEX caldav_data_dav_name_idx ON caldav_data (dav_name);
-- Improves performance of the stored function sync_dav_id(), which is called via a trigger on any insert or update on caldav_data
CREATE INDEX calendar_item_dav_name_idx ON calendar_item (dav_name);
-- Speeds up construction of CalDAVRequest, in particular when DaviCAL attempts to determine the "correct" URL for a calendar collection
CREATE INDEX collection_dav_name_idx ON collection (dav_name);
SELECT new_db_revision(1,2,12, 'Decembre' );
COMMIT;
ROLLBACK;