Textbook on Manvendra Rajpoot https://blog.rajpoot.dev/tags/textbook/ Recent content in Textbook on Manvendra Rajpoot Manvendra Rajpoot https://blog.rajpoot.dev/img/personal/cover.png https://blog.rajpoot.dev/img/personal/cover.png Hugo en Manvendra Rajpoot Sun, 17 May 2026 17:50:46 +0530 Alembic Textbook Ch. 1 — Introduction and Setup https://blog.rajpoot.dev/textbooks/alembic/01-introduction-setup/ Sun, 10 May 2026 06:00:00 +0530 https://blog.rajpoot.dev/textbooks/alembic/01-introduction-setup/ Chapter 1 — Alembic introduction: what it is, setup, env.py, naming conventions. Pydantic v2 Textbook Ch. 1 — Introduction and the v2 Mental Model https://blog.rajpoot.dev/textbooks/pydantic/01-introduction-and-mental-model/ Sat, 09 May 2026 06:00:00 +0530 https://blog.rajpoot.dev/textbooks/pydantic/01-introduction-and-mental-model/ Chapter 1 — Pydantic v2 introduction: BaseModel, validation vs serialization, the v2 architecture. Postgres SQLAlchemy Textbook Ch. 1 — Dialects, asyncpg vs psycopg, and Postgres Setup https://blog.rajpoot.dev/textbooks/sqlalchemy-postgres/01-postgres-dialects-asyncpg-psycopg/ Fri, 08 May 2026 06:00:00 +0530 https://blog.rajpoot.dev/textbooks/sqlalchemy-postgres/01-postgres-dialects-asyncpg-psycopg/ Chapter 1 — SQLAlchemy with Postgres: choosing a driver (asyncpg / psycopg / psycopg2), connection setup, server settings. SQLAlchemy 2.0 Textbook Ch. 1 — Introduction, Core vs ORM, and the 2.0 Mental Model https://blog.rajpoot.dev/textbooks/sqlalchemy/01-introduction-core-vs-orm/ Thu, 07 May 2026 06:00:00 +0530 https://blog.rajpoot.dev/textbooks/sqlalchemy/01-introduction-core-vs-orm/ Chapter 1 — SQLAlchemy 2.0 fundamentals: the unified Core/ORM API, engine, connection, the 2.0 style query. FastAPI Textbook Ch. 1 — Introduction, Architecture, and the ASGI Foundation https://blog.rajpoot.dev/textbooks/fastapi/01-introduction-and-architecture/ Wed, 06 May 2026 06:00:00 +0530 https://blog.rajpoot.dev/textbooks/fastapi/01-introduction-and-architecture/ Chapter 1 of the FastAPI textbook — what FastAPI is, the ASGI foundation, Starlette underneath, and how the pieces fit. Alembic Textbook Ch. 2 — Autogenerate: What It Sees, What It Misses https://blog.rajpoot.dev/textbooks/alembic/02-autogenerate/ Sun, 10 May 2026 06:10:00 +0530 https://blog.rajpoot.dev/textbooks/alembic/02-autogenerate/ Chapter 2 — Alembic autogenerate: what it detects, what it misses, review checklist. Pydantic v2 Textbook Ch. 2 — Fields, Types, and Constraints https://blog.rajpoot.dev/textbooks/pydantic/02-fields-types-constraints/ Sat, 09 May 2026 06:10:00 +0530 https://blog.rajpoot.dev/textbooks/pydantic/02-fields-types-constraints/ Chapter 2 — Pydantic v2 fields, types, constraints, defaults, aliases. Postgres SQLAlchemy Textbook Ch. 2 — JSONB, Arrays, Ranges, and Postgres-Specific Types https://blog.rajpoot.dev/textbooks/sqlalchemy-postgres/02-postgres-types-jsonb-arrays/ Fri, 08 May 2026 06:10:00 +0530 https://blog.rajpoot.dev/textbooks/sqlalchemy-postgres/02-postgres-types-jsonb-arrays/ Chapter 2 — Postgres-specific types in SQLAlchemy: JSONB, ARRAY, ranges, citext, INTERVAL, NUMRANGE, INET. SQLAlchemy 2.0 Textbook Ch. 2 — Engine, Pooling, and Connections https://blog.rajpoot.dev/textbooks/sqlalchemy/02-engine-pooling-connections/ Thu, 07 May 2026 06:10:00 +0530 https://blog.rajpoot.dev/textbooks/sqlalchemy/02-engine-pooling-connections/ Chapter 2 — SQLAlchemy engine internals: pooling strategies, connection lifecycle, events, dialects. FastAPI Textbook Ch. 2 — Routing, Path Operations, and the Request Anatomy https://blog.rajpoot.dev/textbooks/fastapi/02-routing-and-request-anatomy/ Wed, 06 May 2026 06:10:00 +0530 https://blog.rajpoot.dev/textbooks/fastapi/02-routing-and-request-anatomy/ Chapter 2 — FastAPI routing in depth: path operations, parameter sources, routers, mounts, and the request lifecycle. Alembic Textbook Ch. 3 — Writing Migrations Manually https://blog.rajpoot.dev/textbooks/alembic/03-writing-manually/ Sun, 10 May 2026 06:20:00 +0530 https://blog.rajpoot.dev/textbooks/alembic/03-writing-manually/ Chapter 3 — Manual Alembic migrations: op API, batch_alter_table, raw SQL, data migrations. Pydantic v2 Textbook Ch. 3 — Validators in Depth https://blog.rajpoot.dev/textbooks/pydantic/03-validators/ Sat, 09 May 2026 06:20:00 +0530 https://blog.rajpoot.dev/textbooks/pydantic/03-validators/ Chapter 3 — Pydantic v2 validators: field_validator, model_validator, before/after, BeforeValidator/AfterValidator. Postgres SQLAlchemy Textbook Ch. 3 — Postgres Indexes in SQLAlchemy https://blog.rajpoot.dev/textbooks/sqlalchemy-postgres/03-postgres-indexes/ Fri, 08 May 2026 06:20:00 +0530 https://blog.rajpoot.dev/textbooks/sqlalchemy-postgres/03-postgres-indexes/ Chapter 3 — Postgres index types in SQLAlchemy: B-tree, GIN, GiST, BRIN, HASH, partial, expression, INCLUDE. SQLAlchemy 2.0 Textbook Ch. 3 — Schema and the Type System https://blog.rajpoot.dev/textbooks/sqlalchemy/03-schema-and-types/ Thu, 07 May 2026 06:20:00 +0530 https://blog.rajpoot.dev/textbooks/sqlalchemy/03-schema-and-types/ Chapter 3 — SQLAlchemy schema definition: Mapped, mapped_column, types, defaults, indexes, constraints. FastAPI Textbook Ch. 3 — Pydantic Models and Request Validation https://blog.rajpoot.dev/textbooks/fastapi/03-pydantic-models-validation/ Wed, 06 May 2026 06:20:00 +0530 https://blog.rajpoot.dev/textbooks/fastapi/03-pydantic-models-validation/ Chapter 3 — Pydantic for FastAPI: input models, validators, types, custom errors, and how request bodies become typed Python objects. Alembic Textbook Ch. 4 — Branching, Merging, and Multiple Heads https://blog.rajpoot.dev/textbooks/alembic/04-branching-merging/ Sun, 10 May 2026 06:30:00 +0530 https://blog.rajpoot.dev/textbooks/alembic/04-branching-merging/ Chapter 4 — Alembic branches: when they happen, how to merge, and avoiding multiple heads. Pydantic v2 Textbook Ch. 4 — Serialization in Depth https://blog.rajpoot.dev/textbooks/pydantic/04-serialization/ Sat, 09 May 2026 06:30:00 +0530 https://blog.rajpoot.dev/textbooks/pydantic/04-serialization/ Chapter 4 — Pydantic v2 serialization: model_dump, model_dump_json, custom serializers, exclude, mode. Postgres SQLAlchemy Textbook Ch. 4 — Full-Text Search https://blog.rajpoot.dev/textbooks/sqlalchemy-postgres/04-full-text-search/ Fri, 08 May 2026 06:30:00 +0530 https://blog.rajpoot.dev/textbooks/sqlalchemy-postgres/04-full-text-search/ Chapter 4 — Postgres FTS via SQLAlchemy: tsvector, tsquery, GIN index, ranking, websearch. SQLAlchemy 2.0 Textbook Ch. 4 — The Session and the Unit of Work https://blog.rajpoot.dev/textbooks/sqlalchemy/04-session-and-unit-of-work/ Thu, 07 May 2026 06:30:00 +0530 https://blog.rajpoot.dev/textbooks/sqlalchemy/04-session-and-unit-of-work/ Chapter 4 — Sessions in SQLAlchemy 2.0: lifecycle, identity map, flush vs commit, expire, and the unit of work pattern. FastAPI Textbook Ch. 4 — Response Models, Serialization, and Output Discipline https://blog.rajpoot.dev/textbooks/fastapi/04-response-models-serialization/ Wed, 06 May 2026 06:30:00 +0530 https://blog.rajpoot.dev/textbooks/fastapi/04-response-models-serialization/ Chapter 4 — Response models in FastAPI: response_model, exclusion, computed fields, custom encoders, and output discipline. Alembic Textbook Ch. 5 — Online Schema Changes (Zero-Downtime Patterns) https://blog.rajpoot.dev/textbooks/alembic/05-online-schema-changes/ Sun, 10 May 2026 06:40:00 +0530 https://blog.rajpoot.dev/textbooks/alembic/05-online-schema-changes/ Chapter 5 — Online schema changes via Alembic: expand-contract, batched backfills, concurrent indexes, big-table patterns. Pydantic v2 Textbook Ch. 5 — Nested Models, Generics, and Discriminated Unions https://blog.rajpoot.dev/textbooks/pydantic/05-nested-generics-unions/ Sat, 09 May 2026 06:40:00 +0530 https://blog.rajpoot.dev/textbooks/pydantic/05-nested-generics-unions/ Chapter 5 — Pydantic v2: nested models, generic models, discriminated unions. Postgres SQLAlchemy Textbook Ch. 5 — Locking, Advisory Locks, and SKIP LOCKED https://blog.rajpoot.dev/textbooks/sqlalchemy-postgres/05-locking-advisory/ Fri, 08 May 2026 06:40:00 +0530 https://blog.rajpoot.dev/textbooks/sqlalchemy-postgres/05-locking-advisory/ Chapter 5 — Postgres locking via SQLAlchemy: row locks, advisory locks, SKIP LOCKED, queue patterns. SQLAlchemy 2.0 Textbook Ch. 5 — Querying with select() https://blog.rajpoot.dev/textbooks/sqlalchemy/05-querying-with-select/ Thu, 07 May 2026 06:40:00 +0530 https://blog.rajpoot.dev/textbooks/sqlalchemy/05-querying-with-select/ Chapter 5 — Querying SQLAlchemy: select(), filtering, joins, aggregations, subqueries, CTEs, and the result API. FastAPI Textbook Ch. 5 — Dependency Injection in Depth https://blog.rajpoot.dev/textbooks/fastapi/05-dependency-injection/ Wed, 06 May 2026 06:40:00 +0530 https://blog.rajpoot.dev/textbooks/fastapi/05-dependency-injection/ Chapter 5 — FastAPI dependency injection: Depends, sub-dependencies, scopes, lifecycle, overrides, class deps, security deps, sync vs async. Alembic Textbook Ch. 6 — Multi-Database and Multi-Tenant Migrations https://blog.rajpoot.dev/textbooks/alembic/06-multi-database/ Sun, 10 May 2026 06:50:00 +0530 https://blog.rajpoot.dev/textbooks/alembic/06-multi-database/ Chapter 6 — Alembic with multiple databases or schema-per-tenant: env.py setup, migration strategies. Pydantic v2 Textbook Ch. 6 — Custom Types and TypeAdapter https://blog.rajpoot.dev/textbooks/pydantic/06-custom-types-typeadapter/ Sat, 09 May 2026 06:50:00 +0530 https://blog.rajpoot.dev/textbooks/pydantic/06-custom-types-typeadapter/ Chapter 6 — Pydantic v2 custom types, RootModel, TypeAdapter, dataclass integration. Postgres SQLAlchemy Textbook Ch. 6 — LISTEN / NOTIFY for Pub/Sub https://blog.rajpoot.dev/textbooks/sqlalchemy-postgres/06-listen-notify/ Fri, 08 May 2026 06:50:00 +0530 https://blog.rajpoot.dev/textbooks/sqlalchemy-postgres/06-listen-notify/ Chapter 6 — Postgres LISTEN/NOTIFY via asyncpg + SQLAlchemy: real-time triggers, queue wakeup, low-latency events. SQLAlchemy 2.0 Textbook Ch. 6 — Relationships and Loading Strategies https://blog.rajpoot.dev/textbooks/sqlalchemy/06-relationships/ Thu, 07 May 2026 06:50:00 +0530 https://blog.rajpoot.dev/textbooks/sqlalchemy/06-relationships/ Chapter 6 — Relationships in SQLAlchemy 2.0: one-to-many, many-to-many, lazy / eager loading, joinedload, selectinload. FastAPI Textbook Ch. 6 — Authentication and Authorization https://blog.rajpoot.dev/textbooks/fastapi/06-authentication-authorization/ Wed, 06 May 2026 06:50:00 +0530 https://blog.rajpoot.dev/textbooks/fastapi/06-authentication-authorization/ Chapter 6 — FastAPI auth: OAuth2 password / bearer / OIDC, sessions, API keys, role-based access, and the production patterns. Alembic Textbook Ch. 7 — CI Integration https://blog.rajpoot.dev/textbooks/alembic/07-ci-integration/ Sun, 10 May 2026 07:00:00 +0530 https://blog.rajpoot.dev/textbooks/alembic/07-ci-integration/ Chapter 7 — Alembic in CI: drift detection, up/down round-trip, dry-run, deploy gates. Pydantic v2 Textbook Ch. 7 — Strict Mode and Coercion https://blog.rajpoot.dev/textbooks/pydantic/07-strict-mode-coercion/ Sat, 09 May 2026 07:00:00 +0530 https://blog.rajpoot.dev/textbooks/pydantic/07-strict-mode-coercion/ Chapter 7 — Pydantic v2 strict mode, lax mode, per-field strict types, and coercion rules. Postgres SQLAlchemy Textbook Ch. 7 — Partitioning Strategies https://blog.rajpoot.dev/textbooks/sqlalchemy-postgres/07-partitioning/ Fri, 08 May 2026 07:00:00 +0530 https://blog.rajpoot.dev/textbooks/sqlalchemy-postgres/07-partitioning/ Chapter 7 — Postgres partitioning with SQLAlchemy: declarative partitions, range/list/hash, pg_partman. SQLAlchemy 2.0 Textbook Ch. 7 — Transactions and Concurrency https://blog.rajpoot.dev/textbooks/sqlalchemy/07-transactions-concurrency/ Thu, 07 May 2026 07:00:00 +0530 https://blog.rajpoot.dev/textbooks/sqlalchemy/07-transactions-concurrency/ Chapter 7 — Transactions and concurrency in SQLAlchemy: isolation levels, savepoints, with_for_update, optimistic locking, deadlock retry. FastAPI Textbook Ch. 7 — Async, Concurrency, and the Threadpool https://blog.rajpoot.dev/textbooks/fastapi/07-async-concurrency/ Wed, 06 May 2026 07:00:00 +0530 https://blog.rajpoot.dev/textbooks/fastapi/07-async-concurrency/ Chapter 7 — Async in FastAPI: event loop, threadpool, blocking traps, AnyIO, TaskGroup, and concurrency patterns. Alembic Textbook Ch. 8 — Production Patterns and Recovery https://blog.rajpoot.dev/textbooks/alembic/08-production-recovery/ Sun, 10 May 2026 07:10:00 +0530 https://blog.rajpoot.dev/textbooks/alembic/08-production-recovery/ Chapter 8 — Alembic production patterns: deploy strategies, rollback, recovery from broken migrations. Pydantic v2 Textbook Ch. 8 — JSON Schema Generation https://blog.rajpoot.dev/textbooks/pydantic/08-json-schema/ Sat, 09 May 2026 07:10:00 +0530 https://blog.rajpoot.dev/textbooks/pydantic/08-json-schema/ Chapter 8 — Pydantic v2 JSON Schema generation, OpenAPI integration, custom schemas. Postgres SQLAlchemy Textbook Ch. 8 — Row-Level Security and Multi-Tenancy https://blog.rajpoot.dev/textbooks/sqlalchemy-postgres/08-rls-multitenancy/ Fri, 08 May 2026 07:10:00 +0530 https://blog.rajpoot.dev/textbooks/sqlalchemy-postgres/08-rls-multitenancy/ Chapter 8 — Postgres RLS via SQLAlchemy: per-row tenant isolation with Postgres RLS policies. SQLAlchemy 2.0 Textbook Ch. 8 — Async SQLAlchemy in Depth https://blog.rajpoot.dev/textbooks/sqlalchemy/08-async-deep-dive/ Thu, 07 May 2026 07:10:00 +0530 https://blog.rajpoot.dev/textbooks/sqlalchemy/08-async-deep-dive/ Chapter 8 — Async SQLAlchemy 2.0: AsyncEngine, AsyncSession, async streaming, lazy loading caveats, and FastAPI integration. FastAPI Textbook Ch. 8 — WebSockets, SSE, and Streaming Responses https://blog.rajpoot.dev/textbooks/fastapi/08-websockets-sse-streaming/ Wed, 06 May 2026 07:10:00 +0530 https://blog.rajpoot.dev/textbooks/fastapi/08-websockets-sse-streaming/ Chapter 8 — Real-time in FastAPI: WebSockets, Server-Sent Events, streaming responses, NDJSON, and client patterns. Pydantic v2 Textbook Ch. 9 — Settings (pydantic-settings) https://blog.rajpoot.dev/textbooks/pydantic/09-settings/ Sat, 09 May 2026 07:20:00 +0530 https://blog.rajpoot.dev/textbooks/pydantic/09-settings/ Chapter 9 — pydantic-settings: env vars, .env files, secrets, layered config, CLI integration. Postgres SQLAlchemy Textbook Ch. 9 — Upsert, Bulk Insert, and COPY https://blog.rajpoot.dev/textbooks/sqlalchemy-postgres/09-upsert-bulk/ Fri, 08 May 2026 07:20:00 +0530 https://blog.rajpoot.dev/textbooks/sqlalchemy-postgres/09-upsert-bulk/ Chapter 9 — Postgres upsert (ON CONFLICT) via SQLAlchemy, bulk insert, COPY for huge loads. SQLAlchemy 2.0 Textbook Ch. 9 — Performance: N+1, Bulk Ops, Streaming https://blog.rajpoot.dev/textbooks/sqlalchemy/09-performance/ Thu, 07 May 2026 07:20:00 +0530 https://blog.rajpoot.dev/textbooks/sqlalchemy/09-performance/ Chapter 9 — SQLAlchemy performance: N+1 prevention, bulk inserts, streaming, indexes, query analysis. FastAPI Textbook Ch. 9 — Background Tasks and Task Queues https://blog.rajpoot.dev/textbooks/fastapi/09-background-tasks/ Wed, 06 May 2026 07:20:00 +0530 https://blog.rajpoot.dev/textbooks/fastapi/09-background-tasks/ Chapter 9 — Background work in FastAPI: BackgroundTasks, ARQ, Celery, Dramatiq, and patterns for reliable post-response work. Pydantic v2 Textbook Ch. 10 — Performance, FastAPI Integration, and Alternatives https://blog.rajpoot.dev/textbooks/pydantic/10-performance-and-alternatives/ Sat, 09 May 2026 07:30:00 +0530 https://blog.rajpoot.dev/textbooks/pydantic/10-performance-and-alternatives/ Chapter 10 — Pydantic performance, FastAPI integration patterns, and alternatives (msgspec, attrs). Postgres SQLAlchemy Textbook Ch. 10 — Replication, Failover, and pgvector https://blog.rajpoot.dev/textbooks/sqlalchemy-postgres/10-replication-failover-pgvector/ Fri, 08 May 2026 07:30:00 +0530 https://blog.rajpoot.dev/textbooks/sqlalchemy-postgres/10-replication-failover-pgvector/ Chapter 10 — Replication, failover handling, and pgvector with SQLAlchemy. SQLAlchemy 2.0 Textbook Ch. 10 — Migrations and Schema Evolution https://blog.rajpoot.dev/textbooks/sqlalchemy/10-migrations/ Thu, 07 May 2026 07:30:00 +0530 https://blog.rajpoot.dev/textbooks/sqlalchemy/10-migrations/ Chapter 10 — Schema migrations with SQLAlchemy and Alembic: integration patterns, autogenerate, branching, online schema changes. FastAPI Textbook Ch. 10 — Testing FastAPI: Pytest, AnyIO, and Real DBs https://blog.rajpoot.dev/textbooks/fastapi/10-testing/ Wed, 06 May 2026 07:30:00 +0530 https://blog.rajpoot.dev/textbooks/fastapi/10-testing/ Chapter 10 — Testing FastAPI: TestClient, AsyncClient, dependency overrides, real DB tests, fixtures, and CI patterns. SQLAlchemy 2.0 Textbook Ch. 11 — Testing https://blog.rajpoot.dev/textbooks/sqlalchemy/11-testing/ Thu, 07 May 2026 07:40:00 +0530 https://blog.rajpoot.dev/textbooks/sqlalchemy/11-testing/ Chapter 11 — Testing SQLAlchemy: per-test transactions, testcontainers, factories, and async test fixtures. FastAPI Textbook Ch. 11 — Observability: Logging, Tracing, and Metrics https://blog.rajpoot.dev/textbooks/fastapi/11-observability/ Wed, 06 May 2026 07:40:00 +0530 https://blog.rajpoot.dev/textbooks/fastapi/11-observability/ Chapter 11 — Observability for FastAPI: structured logging with structlog, OpenTelemetry tracing, Prometheus metrics, and correlation. SQLAlchemy 2.0 Textbook Ch. 12 — Production Patterns https://blog.rajpoot.dev/textbooks/sqlalchemy/12-production-patterns/ Thu, 07 May 2026 07:50:00 +0530 https://blog.rajpoot.dev/textbooks/sqlalchemy/12-production-patterns/ Chapter 12 — Production SQLAlchemy: connection pooling, read replicas, observability, multi-tenancy, and operational patterns. FastAPI Textbook Ch. 12 — Deployment, Scaling, and Production https://blog.rajpoot.dev/textbooks/fastapi/12-deployment-production/ Wed, 06 May 2026 07:50:00 +0530 https://blog.rajpoot.dev/textbooks/fastapi/12-deployment-production/ Chapter 12 — Production FastAPI: ASGI servers, Docker, K8s, autoscaling, graceful shutdown, and the production checklist.