You need counts for each five-minute block, with no overlap. Which window fits?
Why A is the answer
A fixed window
Fixed windows are equal and separate.
In detail
- Equal blocks with no overlap are fixed windows.
- Fixed windows do not overlap.
Use case
An illustrative scenario, not a real incident.
A retailer counts orders in each five-minute block, and every event lands in one block.
See it in different ways
flowchart TD A["Windowing"] --> B["Fixed: equal, separate blocks"] A --> C["Sliding: overlapping blocks"] A --> D["Session: activity with gaps"]
mindmap
root((Windows))
Fixed
Equal blocks, no overlap
Sliding
Overlap, moving average
Session
Gaps of inactivity
Global
One window for everythingflowchart TD
Q{"What do you need?"}
Q -->|"Separate blocks"| A0["Fixed"]
Q -->|"Overlapping averages"| A1["Sliding"]
Q -->|"User visits"| A2["Session"]Key point: Fixed windows are equal and separate.
Why the other options are wrong
- B. A session window
- Session windows follow activity gaps.
- C. A global window
- A global window never closes by time.
- D. A sliding window with overlap
- That overlaps.