Errata

Errata for High Performance Web Sites

Submit your own errata for this product.

The errata list is a list of errors and their corrections that were found after the product was released. If the error was corrected in a later version or reprint the date of the correction will be displayed in the column titled "Date Corrected".

The following errata were submitted by our customers and approved as valid errors by the author or editor.

Color key: Serious technical mistake Minor technical mistake Language or formatting error Typo Question Note Update

Version	Location	Description	Submitted By	Date submitted	Date corrected
Printed	Page 13 top	add this URL: ...are explained well in Dave Shea's authoritative article, "CSS Sprites: Image Slicing's Kiss of Death" (http://www.alistapart.com/articles/sprites/).	Steve Souders	May 19, 2009
Printed	Page 15 Table 1-1	http://www.bay.com should be http://www.ebay.com	Anonymous	Aug 22, 2008	Nov 01, 2008
Printed	Page 33 One but last sentence	By default, mod_gzip adds the Vary: Accept Encoding header [...] should be: By default, mod_gzip adds the Vary: Accept-Encoding header [...]	Anonymous	Aug 23, 2008	Nov 01, 2008
Printed	Page 34 middle	change "Using" to "With": With mod_gzip in Apache 1.3, a browser whitelist...	Steve Souders	May 19, 2009
Printed	Page 54 3rd to last line of 1st paragraph	location fixed should be position fixed. Note from the Author or Editor: Change "location: fixed" to "position: fixed".	Anonymous	Jul 10, 2008	Nov 01, 2008
Printed	Page 99 bullet list bottom half	use the correct chapter title: Rule 13: Configure ETags	Steve Souders	May 19, 2009
Printed	Page 104 Diagram - Figure 15-1 and 15-2	Based upon the data on page 103, it looks like the labels in the graph at the top of page 104 are wrong - "Response time" should be swapped with "Page Weight". The same is true of the diagram on page 105. Note from the Author or Editor: In Figure 15-1 and 15-2, the first two labels should be swapped (black line is Page weight, gray line is Response time).	Anonymous
Printed	Page 139 top	under "204 No Content status code", add "beacons, 82": 204 No Content status code AOL, 113 beacons, 82	Steve Souders	May 19, 2009
Printed	Page 139 throughout	add these to the index: @import, 41 LINK tag, 41 SSL, 101	Steve Souders	May 19, 2009