Scale Controls
Twitter Feed
Daily Active Users (DAU)
100M
Read : Write Ratio
100 : 1
Avg Payload Size
500 Bytes
Cache Hit Ratio
85.0%
Fanout Factor (Reads/Write)
200
DB Shards
8 Shards
Topology Topology Canvas (Drag to reposition)
Particle Traffic: Active
Capacity Telemetry
● HEALTHY
Peak Read / Write QPS
231,481 / 2,315
Read Peak (2.0x avg) | Fanout multiplier applied
Estimated SLA p99 Latency
18.4 ms
Cache lookup (2ms) + DB Shard lookup (12ms)
RAM Required (Cache Tier)
120.0 GB
20% active working set stored in Redis
Storage Ingest / Annual Growth
100.0 GB/day | 36.5 TB/yr
Raw storage excluding replication factor
Active Design Formulas
• QPS = (DAU × Actions) / 86,400
• Peak QPS = Avg QPS × 2.0
• Latency = (Hit% × L_cache) + ((1-Hit%) × L_db)
• Peak QPS = Avg QPS × 2.0
• Latency = (Hit% × L_cache) + ((1-Hit%) × L_db)