This repo contains useful methods can be used in your daily development.
You want to know most viewed products within 3 hours. Assume we have 3 buckets to store recent 3 hours views into them, here is a list
| Hour 1:00 | Hour 2:00 | Hour 3:00 |
|---|---|---|
| P1: 0 | P1: 13 | p1: 9 |
| P2: 5 | P2: 11 | p2: 29 |
| P3: 7 | P3: 0 | p3: 0 |
| P4: 0 | P4: 0 | p4: 21 |
Now, we are at fourth hour, (assume it's 3:10), we can get a rank list at the end.
- P2: 45
- p1: 22
- p4: 21
- p3: 7
You can check the implementation under examples/.