SDK and CLI PRs: Jules, NotebookLM, Mission Control
Four PRs to Jules SDK, notebooklm-py, cli-agent and Mission Control: two merged, two closed. The code, the design choices, and why each one ended as it did.
#asyncio
Posts
Telegram Wallet P2P SDKs for Python, Node.js and MCP
Unofficial Python and Node.js SDKs plus an MCP server for Telegram Wallet's read-only P2P market API, with notes on decimals, pagination and rate limits.
Python Context Managers: Resource Management with with
A practical guide to Python context managers: __enter__ and __exit__, contextlib.contextmanager, ExitStack, async with, FastAPI lifespan, locks and common bugs.
Python Email Automation: smtplib, aiosmtplib and SPF
Python email automation done right: EmailMessage, smtplib with app passwords, aiosmtplib for batches, Jinja2 templates, and SPF, DKIM and DMARC for delivery.
Database Connection Pooling: SQLAlchemy and PgBouncer
Database connection pooling for PostgreSQL: SQLAlchemy 2 async pool settings, sizing limits per process, leaks, timeouts and PgBouncer transaction mode.
gRPC High-Performance APIs with Python asyncio
Service-to-service APIs with gRPC and Protobuf: grpcio asyncio server and client, streaming, deadlines, interceptors, schema evolution, HTTP/2 load balancing.
Advanced pytest: Fixtures, Mocking and Hypothesis
Advanced testing with pytest 8: fixture scopes, parametrize, mocking with mocker and respx, async tests, Hypothesis property tests, snapshots and CI settings.
Real-Time WebSockets with FastAPI and Redis
Build a FastAPI WebSocket server, scale it across instances with Redis Pub/Sub, and handle pings, auth, Nginx proxying and client reconnects with backoff.
RabbitMQ Message Queues with aio-pika: Reliable Setup
How to stop losing messages in RabbitMQ: prefetch, publisher confirms, quorum queues and dead letter exchanges, with working Python aio-pika examples.
Python asyncio in Practice: TaskGroup, Timeouts, Semaphores
A practical Python asyncio guide: TaskGroup, asyncio.timeout, Semaphore, to_thread, except* and what Python 3.12 to 3.14 changed, with runnable examples.
Graceful Shutdown in Python: Signals, Docker, K8s, systemd
Graceful shutdown for Python services: catching SIGTERM in plain Python and asyncio, the Docker PID 1 trap, Kubernetes preStop and systemd services.
Celery vs Arq: Async Task Queues in Python
Celery vs Arq for Python task queues: safe Celery settings, an async Arq worker, idempotency, visibility timeouts, retries and Arq's maintenance mode.
MongoDB Schema Design with Python and Async PyMongo
MongoDB schema design in practice: embed or reference, schema validation, ESR index ordering, aggregation and transactions, with Python's async PyMongo API.
SQLAlchemy 2.0 with MySQL: Async ORM, N+1 and Alembic
SQLAlchemy 2.0 with MySQL and PostgreSQL: typed Mapped models, async sessions, eager loading against N+1 queries, Alembic migrations and connection pool tuning.
Redis Caching and Session Management in Python
Redis caching and session management with redis-py asyncio: cache-aside with stampede protection, server-side sessions, Streams, locks and eviction policies.
Automated Trading Systems in Python: Architecture and Risk
Structuring an automated trading system in Python with CCXT and asyncio: WebSocket data, order precision, testnet, position sizing and honest backtests.
Build a Telegram Trading Bot in Python (PTB v22 + CCXT)
A private Telegram price-alert bot with python-telegram-bot v22 and async CCXT: JobQueue, user filters, persistence, token hygiene, and why it never trades.
Ethereum with web3.py v7: Providers, Transactions, Events
Talking to Ethereum with web3.py v7: HTTP, async and WebSocket providers, signing EIP-1559 transactions, reading ERC-20s, chunked event logs and PoA chains.
Building a REST API with FastAPI, Pydantic v2 and Async
A practical FastAPI REST API guide: Pydantic v2 schemas, Annotated dependencies, async SQLAlchemy, testing and a lean Docker setup, with code that runs.
