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Lessons (9)

• Design a File Storage Service

  Upload bytes directly to object storage while the API owns durable metadata, authorization, sharing and synchronization. ![File storage …

• ConfigMaps, Secrets & Storage

  … Safer for important data. 💡 For uploads and user files, object storage (S3, GCS, Azure Blob) accessed through its …

• Database Internals, Replication and Scaling

  Connect storage-engine choices, durability, replicas, query plans, pooling and data layout to real production behaviour. ![Database path …

• DBMS Foundations, Keys & Normalization

  … cross-file integrity or safe shared updates. Q14-Q17: Abstraction, dependencies and design Physical level describes storage; logical …

• Scaling, Load Balancing & Rate Limiting

  … Keep sessions in Redis or in tokens, files in object storage (S3), and state in the database. Scaling …

• Why Kubernetes?

  … Configuration and sensitive values Config & Storage PersistentVolume Storage that outlives pods Config & Storage HPA Autoscaling pods based on …

• Docker & Containers

  … POSTGRES PASSWORD=secret postgres:17 Storage Use for --- --- Named volume Database files, anything persistent Bind mount ( -v ./src …

• Caching & Redis

  … Treat it as a cache or as fast secondary storage, not as your only copy of critical data …

• Clean Architecture in Depth

  … convert data between formats APIs, UI or storage formats change Use cases (and their ports) 🟣 Frameworks & drivers …