[TYPO3-dev] blog_example gives error "A cache with identifier "cache_extbase_reflection" does not exist"

[Ries van Twisk]

On Apr 23, 2010, at 12:35 PM, Steffen Müller wrote:

> Hi.
>
> On 23.04.2010 11:23 Dmitry Dulepov wrote:
>> No. If you make it slow from the beginning, you can't improve it  
>> later,
>> believe me. You need to rewrite it completely with performance in  
>> mind to
>> make it fast. We already went through this with v4.
>
> That reminds me to the famous "premature optimization is the root of  
> all evil" statement by Donald Knuth/ C. A. R. Hoare.

hey talks about micro optimizations there, that's root of all evil.
In case of PHP using "" vs '', and the different sort of loop methods  
that will gain you 500ns
Well, that's how I understood it :)


>
> Knuth argues, that premature performance considerations are  
> dangerous because they might lead to unclean design or complicated  
> code. That would raise the possibility of incorrect code.

I think he does mean that on a lower level though.

>
> But in practice keeping performance in mind could also be the right  
> choice. I think the balance is important. It's always a tradeoff  
> between being lightning fast and rich-featured. Ever seen a cruise  
> liner pass a speedboat?

Actually, these cruise liner can go fast enough to waterski behind them!

20knots is what these things do, and nowdays might even faster then that