Multi-Tenant Service: Overview and Requirements A multi-tenant service hosts multiple customers (tenants) on shared infrastructure while providing strong isolation guarantees […]
Access Log Analyzer: Overview and Requirements An access log analyzer ingests raw HTTP access logs from web servers and CDNs,
DDoS Mitigation Service: Overview and Requirements A DDoS mitigation service absorbs volumetric and application-layer attacks by combining connection-rate limiting at
Bot Detection Service: Overview and Requirements A bot detection service distinguishes automated traffic from legitimate human users in real time.
Metadata Catalog: Overview and Requirements A metadata catalog is the central directory of data assets in an organization. It enables
Data Lineage Service: Overview and Requirements A data lineage service tracks the origin, transformation, and movement of data across a
A service dependency map provides a real-time, queryable graph of which services call which other services, derived automatically from distributed
A span collector is the ingestion backbone of a distributed tracing system. It receives high-throughput span streams from many services,
A distributed tracing service provides end-to-end visibility into request flows across microservices by collecting spans, propagating trace context, applying intelligent
A shadow traffic system mirrors live production requests to a new service version asynchronously, compares responses without affecting users, and
Blue-green deployment eliminates downtime by maintaining two identical production environments and cutting over traffic instantaneously. This design covers environment management,
The bulkhead pattern partitions resources so that a slow or failing dependency cannot consume all threads and starve the rest
A retry service centralizes retry policy enforcement so individual microservices do not each implement their own backoff logic incorrectly. This
Promotions Engine Low-Level Design A promotions engine governs discount codes, automatic promotions, stackability rules, customer eligibility, budget caps, and redemption
Price Engine Low-Level Design A price engine computes the effective selling price for a product at request time by evaluating
