Difference between add and append

[matjazp]

What is the difference between $a->add($item) and $a->append($item)?

I know there are some speed improvements in 2.5.x (comparing to 2.4) but is there room for more? I'm using caching in templates, I can not use ProCache. Looking at timers in debug mode I see:

boot: 0.2262 

boot.load: 0.1925

boot.load.fieldgroups: 0.0506

What is going on between loading fieldgroups and load?

[kongondo]

Have you seen this?: https://processwire.com/talk/topic/4131-difference-between-add-and-append/ - with the exact same topic title as yours...

I also recall you've asked a similar question today here? https://processwire.com/talk/topic/6662-markup-cache-and-pw-performance/?p=81253 No need to double post..

[pwired]

Yup I found that same link in less than 10 seconds.

[matjazp]

Ahm, search before post? What's that? Sorry. 

Yes, I did double post, but sometimes I don't get answers if I ask on another thread, so I just tried my luck here. Hope you are not offended to much ...