#webdev#aws#programming#startup
Stop Using Lambda for ML at This Scale (Benchmark + Cost Analysis)
As a CTO, your job during a Proof of Concept (POC) is deceptively simple: don’t over-engineer, and...
Matia Rašetina6 min readm
Articles by @mate32
Browse the latest writing surfaced through DevArt.
Matia Rašetina6 min read
#aws#webdev#programming#architecture
When DynamoDB Global Tables Go Stale: Chaos Testing Replication Lag with AWS FIS
DynamoDB Global Tables replicate data across regions in seconds, but replication is still...
Matia Rašetina10 min read
#aws#webdev#programming#architecture
DocumentDB vs DynamoDB in a Serverless Stack: I Benchmarked Both So You Don't Have To
If you Google or chat with any of the LLMs about “DynamoDB vs DocumentDB”, most answers are...
Matia Rašetina8 min read
#aws#webdev#security#programming
AWS Lambda PII Handling in Production: DynamoDB Field Encryption with KMS
Handling Personally Identifiable Information (or PII for short) in AWS Lambda-backed systems is not...
Matia Rašetina7 min read
#webdev#aws#programming#architecture
Designing a Serverless Publishing Backend on AWS: Fan-Out as a First-Class Architecture Pattern
Building a simple social platform where users can post about anything seems simple at first glance,...
Matia Rašetina7 min read
#aws#python#webdev#serverless
How My AWS Lambda Runs Faster Than Yours: Here’s how to optimize Lambda Cold Starts with SnapStart
If you ever worked with AWS Lambda, you know about one of their main weak points — cold starts. It’s...
Matia Rašetina6 min read
#webdev#aws#softwaredevelopment#programming
CloudFront Signed Cookies Authorization: A Powerful Session-Based Pattern for Private Content on AWS
Providing private content securely and swiftly is a very common challenge for any application which...
Matia Rašetina9 min read
#aws#programming#python#webdev
Redis vs DynamoDB vs DAX: I Benchmarked AWS Caching Performance (The Results Were Unexpected)
In many backend systems, user data is fetched on almost every request. A common assumption is that...
Matia Rašetina6 min read
#aws#rag#programming#python
Running a RAG Pipeline in a Production Full-Stack Application (Without a Vector Database)
In the previous post, I focused on how to build a Retrieval-Augmented Generation (RAG) pipeline on...
Matia Rašetina6 min read
#aws#rag#programming#python
You Don’t Need a Vector Database to Build RAG (Yet): A ~$1/Month DynamoDB Pipeline
You've just been tasked with building a document Q&A system, where the users are able to upload...
Matia Rašetina10 min read
#webdev#aws#python#programming
Eliminating Repetitive CRUD and Presigned URL Logic with AWS AppSync Pipeline Resolvers
During the end of 2025, I wanted to end the year strong with learning and developing a project with a...
Matia Rašetina11 min read
#aws#python#devops#webdev
The Complete Guide to AWS Lambda Aliases, Versions, and Canary Deployments (With CDK Examples)
Deploying a new Lambda code to your AWS environment shouldn’t be stressful at all, but for some...
Matia Rašetina6 min read
#aws#database#serverless#programming
PynamoDB Tutorial: Build Production-Ready DynamoDB CRUD APIs in AWS Lambda
I've been building on AWS for multiple years now, and one of the most repetitive parts I found was...
Matia Rašetina8 min read
#aws#webdev#ai#programming
Designing a Scalable Image Labeling Workflow with AWS S3, SQS, Lambda, Rekognition and Bedrock
Introduction Managing the data on a real estate platform at scale can be a very...
Matia Rašetina8 min read
#aws#devops#programming#cloud
I Built a Safety Net for My AWS Deployments - Here's the Code
Imagine that you are the lead developer on a project and you are deploying the latest features and...
Matia Rašetina8 min read
#aws#devops#terraform#webdev
How I Scaled My AWS Side Project from Local Lambdas to Full Infrastructure with Terraform and AWS Amplify
EventSpark is the event management platform we’ve done a few months ago, which was only done locally...
Matia Rašetina8 min read
#aws#serverless#webdev#terraform
Stop AWS Bill Shock: Build an Automated Cost Guardian with Terraform in 10 Minutes
The Problem: AWS Bill Shock is Real Picture this: You spin up a few EC2 instances for a...
Matia Rašetina7 min read
#webdev#aws#datascience#tutorial
I Built a Self-Updating ML Model That Handles Traffic With Ease - Here’s How
Most ML models die in notebooks. I built one that retrains itself, scales to hundreds of users, and...
Matia Rašetina11 min read
#aws#ai#serverless#docker
How to Deploy Production-Ready AI Models on AWS Lambda Without the $500/Month Bill
If you are an aspiring Data Scientist, ML engineer or a DevOps engineer looking to expand your...
Matia Rašetina16 min read
#aws#webdev#programming#serverless
I Built a Complete Event Management Platform with $0 Server Costs With NextJS and AWS (Here’s How)
In this blog post, we are going over the project which is called “EventSpark” - a serverless event...
Matia Rašetina14 min read