This way when the user visits the next page, you could have most of the components already in the cache and your page will load much faster for the user.
The benefit is mainly seen on busy backends or light frontends.
While there are a huge number of XSS attack vectors, following a few simple rules can completely defend against this serious attack.
Posted theringlord 1 of 5 2 of 5 3 of 5 4 of 5 5.Top discuss this rule Put Scripts at the Bottom The problem caused by scripts is that they block parallel downloads.Most web sites gzip their html documents.Org as opposed to www.Reducing the number of unique hostnames reduces the number of DNS lookups.Reducing the number of http requests in your page is the place to start.Adding a counter to the CSS expression allows us to keep track of when and how often a CSS expression is evaluated.Top discuss this rule, add an Expires or a Cache-Control Header.Therefore the impact of this performance improvement depends on how often users hit your pages with a primed cache.Using hex entities is recommended in the spec.Set Expires header with what you feel comfortable (since you cannot rename it if you decide to change it).If the address book hasn't been modified since the last download, the timestamp will be the same and the address book will be read from the browser's cache eliminating an extra http roundtrip.Http/1.1 200 OK Last-Modified: Tue, 03:03:59 GMT ETag: "10c24bc-4ab-457e1c1f" Content-Length: 12195 Later, if the browser has to validate a component, it uses the If-None-Match header to pass the ETag back to the origin server.For example, the server with the fewest network hops rabbit shooting games hacked or the server with the quickest response time is chosen.Safe html Attributes include: align, alink, alt, bgcolor, border, cellpadding, cellspacing, class, color, cols, colspan, coords, dir, face, height, hspace, ismap, lang, marginheight, marginwidth, multiple, nohref, noresize, noshade, nowrap, ref, rel, rev, rows, rowspan, scrolling, shape, span, summary, tabindex, title, usemap, valign, value, vlink, vspace.
Accept-Encoding: gzip, deflate If the web server sees this header in the request, it may compress the response using one of the methods listed by the client.It even sort of works for untrusted data gta iv never die cheat code ps3 that goes into attributes, particularly if you're religious about using"s around your attributes.Top Split Components Across Domains Splitting components allows you to maximize parallel downloads.Firefox 3 and earlier versions behave the same as Safari and Chrome, but version.5 addressed this issue bug 444931 and no longer sends a request.Home Page with Firebug's Net Panel turned.Owasp Java Encoder Project for high-performance encoding.The problem with putting stylesheets near the bottom of the document is that it prohibits progressive rendering in many browsers, including Internet Explorer.
How does it work?
This is a "whitelist" model, that denies everything that is not specifically allowed.