Sheet 02

User Metrics & Funnel Model

Top-of-funnel traffic decomposition from aggregate 10M MAU down to Peak API RPS.

Anchor Peak RPS6,667

Interactive Request Funnel Cascade

01.

Monthly Active Users (MAU)

Base Input

Total registered user cohort logging in at least once in a 30-day window.

02.

Daily Active Users (DAU)

20% DAU/MAU

Active unique users on platform within any 24-hour cycle.

03.

Peak Concurrent Users (PCU)

20% of DAU

Simultaneous active sessions during highest traffic surge of the day.

04.

Raw API RPS

30 acts / 1h

Theoretical unbuffered request throughput generated by concurrent user sessions.

05.

Peak API RPS (Anchor)

2x buffer

The definitive anchor capacity number sizing all downstream gateways, microservices, databases, and message brokers.

Mathematical Derivation Table

Click metric badges to inspect formulas
1. Daily Active Users (DAU)

MAU × (DAU% / 100)

2. Peak Concurrent Users (PCU)

DAU × (Peak_Concurrent% / 100)

3. Raw API RPS

(PCU × Actions/Session) / Peak_Duration_sec

4. Peak API RPS (Anchor)

Raw_RPS × Safety_Buffer

5. Daily API Transactions

DAU × Actions/Session

6. Monthly API Transactions

Daily_Requests × 30 days

7. Peak Bandwidth (MB/s)

Peak_RPS × (Response_KB + Request_KB) / 1024

8. Peak Line Speed (Gbps)

Peak_MBps × 8 / 1000

9. Daily Egress Volume (GB)

Daily_Requests × AVG_RESPONSE_SIZE_KB / 1024²

10. Monthly Egress Volume (TB)

Daily_Egress_GB × 30 / 1024