Mathias Paulenko

Decide when to go serverless and when not to. Covers FaaS patterns, event-driven design, cold starts, cost models, vendor lock-in, and...

Choose and operate serverless databases for event-driven applications. Covers DynamoDB, Aurora Serverless, FaunaDB, and PlanetScale with...

Protect APIs from abuse and ensure fair resource usage with token bucket, sliding window, and leaky bucket rate limiting.

Cache expensive database query results in Redis with cache-aside pattern, TTL management, and invalidation on writes for Python...

Set up Caffeine cache in a Java application with size-based, time-based, and weighted eviction policies for high-performance local caching.

Apply Spring's @Cacheable, @CachePut, and @CacheEvict annotations with a Redis cache manager for declarative caching in Java applications.

Configure Nginx as a caching reverse proxy to cache upstream HTTP responses with TTL zones, cache keys, and conditional purging.

Invalidate Redis cache entries in Node.js with TTL expiry, explicit deletion, pattern-based clearing, and pub/sub-based distributed...

Use Django's built-in cache framework with per-view caching, template fragment caching, and low-level cache API for database query...

Cache HTTP responses in Python using httpx with CacheControl for HTTP-compliant caching, ETag handling, and conditional requests.

Use Memcached as a distributed session store in Python web applications with pymemcache, TTL management, and failover handling.

Build async pipelines in C# using async/await, Task.Run, Task.WhenAll, Task.WhenAny, CancellationTokenSource, Channels, and...

Build concurrent systems in Go using goroutines, channels, select statements, worker pools, fan-out/fan-in, pipelines, context...

Build non-blocking async pipelines in Java using CompletableFuture with thenCompose, thenCombine, allOf, anyOf, exception handling,...

Scale Java applications with virtual threads from Project Loom. Use Thread.ofVirtual, Executors.newVirtualThreadPerTaskExecutor, structured...

Execute multiple async operations concurrently in Python using asyncio.gather, asyncio.TaskGroup, error handling with return_exceptions,...

Control concurrency in async Python using asyncio.Semaphore for rate limiting API calls, database connections, and resource access with...

Use Python's ThreadPoolExecutor for parallel I/O operations, thread-safe result collection, Future callbacks, error handling, and mixing...

Build async systems in Rust using the Tokio runtime with tasks, channels, select, synchronization primitives, graceful shutdown, and...

Configure and tune database connection pools to maximize throughput while preventing connection exhaustion.

Build an event-sourced system with CQRS separation using Python, event store persistence, projection rebuilds, snapshots, and idempotent...

Create Kafka consumer groups in Python with partition assignment, offset management, commit strategies, rebalance handling, and...

Build Kafka consumers in Spring Boot using @KafkaListener annotations, concurrent consumers, error handlers, DLQ patterns, and batch...

Use the transactional outbox pattern to reliably publish domain events alongside database changes, with a relay processor, polling...