lambda
44 posts
Devcontainers, Codespaces and AWS Lambda MicroVMs as homes for a coding agent: what each rung adds, what it costs, and when moving the agent off the laptop pays off.
lambda · claude-code · ai-tools +5
Before building an internal service layer, decide whether you need one: what it costs per call, the volume where VPC Lattice wins, and when direct invoke still beats it.
aws · aws-cdk · lambda +4
A private REST API structurally cannot carry gRPC, and every AWS surface that speaks gRPC excludes Lambda targets. What to keep from gRPC, and what to drop.
aws · aws-cdk · lambda +4
The private REST API, the resource policy that switches it on, per-route AWS_IAM grants, the two CDK stacks, and signing the call from a Node 22 Lambda.
aws · aws-cdk · lambda +4
SigV4 proves which service is calling and nothing about which user it is for. How to propagate a verified subject, and what the transport actually encrypts.
aws · aws-cdk · lambda +4
Same-account, the resource policy and the caller's identity policy are an OR. Cross-account they become an AND, and silence denies. What that changes in the perimeter.
aws · aws-cdk · lambda +4
API Gateway shares one throttle bucket with your front door, never retries a Lambda integration, and cannot see loops through itself. What you have to rebuild.
aws · aws-cdk · lambda +4
The access log already names the caller, route, and latency. Per-route metrics are not free, the user token needs masking, and AWS is switching off its own mesh.
aws · aws-cdk · lambda +4
A measured benchmark of 9 bundlers and 3 cdk synth runners for CDK TypeScript Lambdas, with a per-layer default and the rule that picks each one.
aws-cdk · lambda · typescript +3
Lambda durable functions put the orchestrator in your TypeScript. Reach for them when you own the whole workflow; keep Step Functions for cross-team state machines.
lambda · step-functions · serverless +1
Match architecture weight to each runtime's init-amortization: lean handlers on single-purpose Lambda, more on a Lambdalith, full OOP/DI only on long-lived runtimes.
architecture · lambda · serverless +3
A small, complete URL shortener on AWS Lambda and DynamoDB with Effect and SST v4, showing schema-at-the-boundary, layers, and tagged-error mapping.
functional-programming · lambda · typescript +2
How to slice AWS Lambda functions: default to single-purpose, treat the single-domain Lambdalith as an earned exception, and the platform forces that decide it.
lambda · serverless · architecture +2
DI containers, monolithic SDKs, god-handlers, top-level secret fetches, and heavy ORMs: what they cost on cold start, and the functional shape that replaces them.
lambda · typescript · serverless +2
Run Bun and Deno on AWS Lambda with custom runtimes: performance benchmarks, cost analysis, and production deployment patterns.
lambda · javascript · serverless +2
A technical guide to choosing and implementing AWS edge computing for global apps, with practical examples and cost optimization strategies.
aws · cloudfront · lambda +6
A technical guide to advanced Amazon Cognito: custom auth flows, federation, multi-tenancy, migration strategies, and production-grade security with CDK.
aws · authentication · serverless +6
A practical guide to learning Effect incrementally and integrating it with AWS Lambda, with real code examples, common pitfalls, and production patterns.
typescript · functional-programming · lambda +4
A technical guide comparing AWS Secrets Manager and Parameter Store, showing when to use each service with real-world implementation patterns and CDK examples.
aws · secrets-management · security +7
The order that makes AWS cost work stick: visibility with Cost Explorer and Budgets, right-sizing with Compute Optimizer, then commitments.
aws · cost-optimization · aws-cdk +1
A practical guide to Mozilla SOPS for encrypting secrets in Git: age encryption, AWS CDK and Lambda patterns, and production-ready serverless security.
secrets-management · ci-cd · terraform +7
Build a testing strategy for AWS Lambda, API Gateway, DynamoDB, and Step Functions with practical patterns for fast feedback and reliability.
lambda · testing · serverless +8
Build maintainable, type-safe Lambda middleware with Middy's builder pattern, Zod validation, feature flags, and secrets management for serverless apps.
lambda · middleware · typescript +7
A practical guide to the CloudEvents spec and TypeScript SDK: create, parse, and validate standardized events across AWS Lambda and EventBridge.
typescript · serverless · lambda +2
Practical approaches to managing Lambda Layer versions across dev, staging, and production with AWS CDK, automated deployment pipelines, and rollbacks.
aws · lambda · aws-cdk +4
Learn to build automated preview environments using AWS CDK, Lambda, and GitHub Actions for seamless PR testing and review workflows
aws-cdk · serverless · ci-cd +5
When a Node.js to Go move on AWS Lambda pays for itself and when it does not: the decision framework, the serverless Go patterns, and the cost math behind the call.
go · nodejs · serverless +5
Implementing custom domains, bulk operations, URL expiration, and defense-in-depth security measures for production link shortener services.
aws-cdk · lambda · security +5
Multi-environment deployment, performance optimization at scale, cost management, and monitoring with solid incident response patterns.
aws-cdk · lambda · dynamodb +6
Set up a production-grade link shortener with AWS CDK, DynamoDB, and Lambda: architecture decisions, project layout, and the schema choices that hold up at scale.
aws-cdk · lambda · dynamodb +5
Build the redirect engine, analytics collection, and API Gateway config: performance optimizations and debugging strategies for millions of daily redirects.
aws-cdk · lambda · api-gateway +5
Production-tested strategies for cutting AWS Lambda cold starts: runtime selection, provisioned concurrency, and practical optimization techniques.
lambda · serverless · cold-start +3
Tune AWS Lambda performance: the memory-to-CPU model, benchmarking with Power Tuning, cost analysis, and adaptive allocation patterns.
lambda · serverless · performance +2
Instrument AWS Lambda for production: CloudWatch custom metrics, X-Ray tracing, structured logging, and alerts that track business impact.
lambda · serverless · monitoring +2
Advanced AWS Lambda patterns and cost optimization: Lambda Layers, VPC configuration, cross-account execution, and architectural decisions.
lambda · serverless · cost-optimization +5
When a Lambda fleet outgrows Middy's static middleware model, how a project-specific engine handles per-request config, and what owning one costs
lambda · middleware · performance +6
Discover how Middy transforms Lambda development with middleware patterns, moving from repetitive boilerplate to clean, maintainable serverless functions
lambda · middleware · serverless +5
Hold AWS Lambda warm-path latency inside a 10 ms budget with runtime choice, connection reuse, bundle discipline, caching, and memory tuning.
aws · lambda · performance +4
Handle large file uploads with S3 presigned URLs instead of Lambda proxies: a full CDK stack, both handlers, the browser side, and the security trade-offs.
lambda · aws-cdk · aws +2
Moving from Express.js to Lambda: the common mistakes teams make along the way, and the TypeScript patterns that reduce AWS bills at scale.
api-gateway · cost-optimization · lambda +2
A practical CQRS implementation with AWS Lambda, EventBridge, and DynamoDB, covering event sourcing, eventual consistency, and distributed debugging.
architecture · dynamodb · event-driven +3
Factories, service layers, and DI containers rarely earn their keep in a Lambda-shaped Node.js service. What replaces them, and where classes still win.
event-driven · functional-programming · lambda +3
Migrate Lambda functions, API Gateway, request validation, and error handling from Serverless Framework to AWS CDK with practical examples.
api-gateway · aws · aws-cdk +2
Keep a Lambda API and its OpenAPI contract in sync by generating the spec from Zod schemas and wiring that generation into CDK deployment.
api-gateway · aws-cdk · lambda +4