|
6
by mbp at sourcefrog
import all docs from arch |
1 |
Costs |
2 |
===== |
|
3 |
||
4 |
User thought is most expensive. User time spent waiting is next. |
|
5 |
Developer time for the version control system is also relatively |
|
6 |
expensive. |
|
7 |
||
8 |
Machine resources are cheap. In particular; disk is generally very |
|
9 |
cheap; an ordinary programmer earns enough to buy hundreds of GB of |
|
10 |
disk per day. However, it is sometimes limited, as on a laptop. |
|
11 |
Therefore it is generally OK to trade off disk space for anything |
|
12 |
else, but it should be possible to be compact. |
|
13 |
||
14 |
Network round trips are very bad. |
|
15 |
||
16 |
Consider scalability also; avoid anything worse than O(n). Try to |
|
17 |
avoid anything that needs e.g. to hold the whole tree in memory at any |
|
18 |
time, or to hold the entire history of the project. |
|
19 |
||
20 |
||
21 |