4 ms·
Pretty nice. Hate to be a nitpicker but it's one of my pet peeves: What the slides describe isn't scaling but performance tweaking. Scalability != performance
by JustAGeek 18y ago
Pretty nice.
Hate to be a nitpicker but it's one of my pet peeves:
What the slides describe isn't scaling but performance tweaking. Scalability != performance.
A lot of people get that wrong, still annoys me, silly me... :D
- lallysingh 18y agoWell, there's two ways to look at scalability: - The ability to handle lots of load at all, which comes down to a stability and fault-tolerance issue. - The performance of the system under load. Both are pretty valid.
- JustAGeek 18y agoNo, only the first is valid. :) Some people _believe_ it's #2 but it isn't, sorry. :D "performance of the system under load" is just that, performance. See the Wikipedia article: http://en.wikipedia.org/wiki/Scalability http://en.wikipedia.org/wiki/Scalability
- lallysingh 18y agoNo, the latter does matter. If a system's performance significantly degrades under load, it doesn't scale. Quoting the wikipedia article: 'its ability to either handle growing amounts of work in a graceful manner, or to be readily enlarged.' The first clause is performing well under load, hence the performance requirement.