Showing posts with label Static Compression. Show all posts
Showing posts with label Static Compression. Show all posts

Thursday, July 19, 2012

Tips to Speed up SQL Query

Almost Every website data is stored in a database and served to visitors upon request. Databases are very fast, but there is lots of things that we need to  enhance  speed and make sure not to waste any server resources. In this article, I am suggesting you 10  tips to optimize and speed up your Sql query.

1. Do not Select column that we do not need.

    A very common practice is to use Select * from tablename.
    It's better to select column which you need in output.

2. Avoid using Cursor , use while loop instead of Cursor.

3. Avoid using Sql statement in a loop.It's takes a lot of resource.

4.Use Join instead of Subqueries.
    (SELECT MAX(created)
    FROM posts
    WHERE book_id =
AS latest_post FROM books a

However subqueries are useful, they often can be replaced by a join, which is definitely faster to execute.
SELECT, MAX(p.created) AS latest_post
FROM books 
INNER JOIN posts p
    ON ( = p.book_id)

Enable IIS 7.0 Compression

To enable Compression at IIS 7.0

Enabling IIS Compression can improve performance of a web site.
you can enable both
A) Static Compression
B) Dynamic Compression

Follow these steps to enable it:-
Goto run and type intemgr => it will open up your IIS => then select your website from left hand side pane.
Now at right side you will see an option Compression just click it twice and here we go.
Check Static and dynamic compression.
[note: By default dynamic compression is disabled you need to enable dynamic compression from server manager in administrative panel]