Interview Prep Deep Dives

Every technical claim, metric, and architecture decision from the resume — explained in depth. Use these before any interview.

00
Technical Glossary
Every acronym and concept from the resume — RBAC, Multi-Tenant, JWT, HMAC, P95, KRaft, BLoC, and more. Searchable A–Z.
A–ZRBACJWTSearchable
01
Performance Metrics
P95 latency, 99.9% uptime, 80K+ orders, ₹1.5Cr GMV, <100ms geo search, <50ms Kafka.
<200ms P9599.9% uptimeAPM
02
AWS Infrastructure
EC2, NGINX, CloudFront, WAF, S3, SES, auto-scaling, blue-green deployments.
EC2CloudFrontWAFBlue-Green
03
System Design
Multi-tenant SaaS, RBAC, 7-stage order state machine, event-driven architecture, geospatial queries.
Multi-tenantRBACState Machine
04
Database Design
23 MongoDB collections, Redis read/write separation, query optimization, write amplification.
MongoDBRedisIndexes
05
Real-Time & WebSocket
1000+ concurrent connections, automatic reconnection, event replay, order state sync across 4 apps.
WebSocket1000+ connsEvent Replay
06
Security & Auth
JWT + refresh token rotation, RBAC, audit logging, token-bucket rate limiting, webhook HMAC.
JWTToken RotationHMAC
07
Payment Systems
Juspay, PhonePe, Razorpay, idempotency, retry logic, graceful degradation, admin recovery.
JuspayIdempotencyRetry Logic
08
Kafka & Tredye
KRaft mode, Snappy compression, 4-stage pipeline, <50ms latency, RSI (Wilder's), ZigZag divergence.
Kafka KRaftRSIZigZag
09
MCP & Flutter
Model Context Protocol, SSE/STDIO transports, BLoC, go_router, 4-app ecosystem, 15+ releases.
MCPSSE/STDIOBLoCFlutter