Increase your JSF application performance (Part 2 - Design Patterns)

• Use Facelets instead of JSP
• If possible, always use HTML instead of JSF tags
• Never put logic in getters because they can be called multiple times - especially for the rendered attribute
• Avoid much logic in EL expression
• Avoid using h:outputText. Just use EL expressions. If you need to escape HTML, it's better to use a EL function
• Use AJAX as much as possible
• Only process and update components which are really required to process or update
• Cache data, which is required multiple times in the same view, in @RequestScoped beans
• Avoid using @SessionScoped, @ViewScoped and other long living scopes
• Split your beans. Its better to have a seperate bean for logic and a seperate bean for values which are required for multiple requests (@ViewScoped, @ViewAccessScoped...). I call them *Controller and *StateHolder