mirrors
/
system-design-primer
mirror of https://github.com/donnemartin/system-design-primer.git
1
0
Fork 0
Code Issues Projects Releases Wiki Activity

Add Performance vs scalability section

pull/5/head
Donne Martin 2017-02-27 05:06:10 -08:00
parent 9aee5ed72c
commit 116851d1e9
1 changed files with 14 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
README.md
View File

@ -531,3 +531,17 @@ Next, we'll look at high-level trade-offs:
Keep in mind that **everything is a trade-off**.
Then we'll dive into more specific topics such as DNS, CDNs, and load balancers.
## Performance vs scalability
A service is **scalable** if it results in increased **performance** in a manner proportional to resources added. Generally, increasing performance means serving more units of work, but it can also be to handle larger units of work, such as when datasets grow.<sup><a href=http://www.allthingsdistributed.com/2006/03/a_word_on_scalability.html>1</a></sup>
Another way to look at performance vs scalability:
* If you have a **performance** problem, your system is slow for a single user.
* If you have a **scalability** problem, your system is fast for a single user but slow under heavy load.
### Source(s) and further reading
* [A word on scalability](http://www.allthingsdistributed.com/2006/03/a_word_on_scalability.html)
* [Scalability, availability, stability, patterns](http://www.slideshare.net/jboner/scalability-availability-stability-patterns/)