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Hectal
Roadmap
Phase 14Advanced18 of 19 in the curriculum

Production Architecture

Reliability, disaster recovery, observability, security, multi-tenancy, cost — the engineer's layer.

Everything before was the interview; this phase is the on-call. Production architecture is reliability, DR, observability, security and cost — the answers that make a 'nice diagram' into a system that survives 3 a.m.

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8 topics ~51 min 4 code blocks & diagrams
Start with the first topic
1
14.1

Reliability

Failover, redundancy, replication and health checks — the mechanisms that make downtime an exception, not a feature.

7 min 1 diagram practice

2
14.2

Disaster Recovery

RPO, RTO, backup and restore at the REGION level — the plan for when the whole datacenter dies.

6 min 1 diagram practice

3
14.3

Observability

Logs, metrics, traces — three signals, one question: 'what is happening and why?' (Prometheus, Grafana, OTel, ELK).

7 min 1 diagram practice

4
14.4

Security

Authentication, authorization, OAuth2, JWT, mTLS, secrets, encryption — the seven walls of a real system.

7 min 1 diagram practice

5
14.5

Multi-tenancy

Shared infrastructure, isolated tenants — the SaaS operator's architecture, with a real isolation decision.

6 min practice

6
14.6

Rate Limiting (Production)

The production-shaped limiter: global policies, edge enforcement, quotas per tenant, and the fail-open story.

6 min practice

7
14.7

Data Privacy

GDPR-grade concerns in designs: retention, deletion, PII classification, consent, and the 'right to be forgotten'.

6 min practice

8
14.8

Cost Optimization

The question every senior interviewer actually asks: what does this architecture cost, and what can we remove?

6 min practice