39 articles tagged with ""cloud""
Your SQS queue has 47,000 messages stuck in a loop, retrying forever, and you have no idea why. After running serverless e-commerce backends on AWS, here's everything I wish I'd known about SQS, visibility timeouts, and the DLQ that saves your sanity!
DynamoDB is either the best thing that ever happened to your serverless backend or the most expensive mistake of your career. After architecting e-commerce platforms on it for years, here's what I wish someone had told me on day one!
You're storing 4 years of logs in S3 Standard and paying premium prices for data nobody's touched since the Obama administration. Let me fix that.
Your API is getting hammered by bots and you're paying Lambda's invoice for every single scraper hit. AWS WAF is the bouncer your serverless app desperately needs!
If you're copy-pasting the same utility code and npm packages across 30 Lambda functions, your deployment zips are a disaster and your sanity is next. Lambda Layers fix this — here's everything I wish I knew earlier.
That one microservice eating all your CPU? Yeah, it's taking down everything else too. Here's how Kubernetes resource limits save your cluster from itself.
I once pushed an AWS access key to a public GitHub repo at 2 AM. Within four minutes, a bot had spun up 47 crypto-mining EC2 instances in regions I'd never heard of. This post is my penance. Here's how to use AWS Secrets Manager properly — and never have that particular existential crisis again.
DynamoDB is AWS's magic serverless database - infinitely scalable, zero maintenance, and capable of destroying your architecture if you don't respect it. After building e-commerce backends on it, here's what I wish someone had told me on day one!
I used to spend more time patching EC2 instances than writing features. Then I discovered ECS Fargate and never looked back. Here's how I migrated our e-commerce backend to serverless containers — and the gotchas that nearly broke production.
Your Lambda crashed mid-order. Your server rebooted at 3 AM. Your API timed out. Without SQS, that message is GONE forever. Here's how I stopped losing customer orders in production.
I spent two years writing CloudFormation YAML by hand. 4,000 lines. Four digits. I once spent an entire afternoon debugging a misaligned space. Then I discovered AWS CDK and I genuinely cannot go back.
I once built a notification system using cron jobs, a custom email queue, separate SMS API calls, and a Slack webhook I 'temporarily' hardcoded. It worked great until an order confirmation email arrived 4 hours late and a customer's SMS went to someone else. AWS SNS exists. I should have used it.
I once served 10,000 users in Tokyo from a single EC2 instance in us-east-1. Every image, every CSS file, every API response — round-tripping 14,000km across the Pacific. My users were not happy. CloudFront fixed it. Let me save you the embarrassment.
I watched a $12/month RDS bill turn into $340 in a single flash sale. Same queries. Same code. Just 10x the traffic. ElastiCache saved my career. Here's everything I wish I'd known before Black Friday.
Forgot to set resource limits and your whole cluster crashed because one rogue pod ate all the CPU? Been there. Here's the definitive guide to Kubernetes requests and limits so your cluster stays healthy and your pager stays silent.
I once lost 2,400 order messages in production. Not hacked. Not a DDoS. Just SQS silently swallowing them. Here's everything I learned about Dead Letter Queues, visibility timeouts, and building bulletproof message queues!
I once spent three weeks building a custom JWT auth system for our serverless backend. It had refresh token rotation, device tracking, forgot-password flows, and at least four security vulnerabilities I didn't know about until a penetration tester found them. Then someone showed me Cognito. I cried a little.
I once built a 'message queue' using a DynamoDB table, a cron job, and a lot of prayers. It worked until it didn't. Then I discovered SQS and felt both relieved and deeply embarrassed. Here's everything you need to know to stop reinventing the queue.
Your images are fast. In Virginia. Users in Singapore are crying. Let me tell you how CloudFront fixed our e-commerce app and why cache invalidation is still the hardest problem in computer science.
I spent three days debugging why our e-commerce order confirmation emails had a 40% open rate — until I realized 40% is amazing when the other 60% was silently landing in spam. Here's everything I learned about not destroying your sender reputation on AWS SES.
I once thought our AWS bill was fine — until I actually read it. Turns out we were paying $400/month for data transfer between services in the same Availability Zone. Here's everything I learned about cutting AWS costs without breaking production.
Your pods keep getting OOMKilled and you have no idea why? After watching production nodes melt down at 3 AM, I learned the hard way that Kubernetes resource requests and limits are not optional - they're survival gear.
I once lost 40,000 order events because a Lambda bug silently ate messages until the queue was empty. SQS Dead Letter Queues would have saved me. Don't be me.
For 18 months I wired Lambda directly to Lambda and called it 'microservices.' Then I discovered EventBridge and realized I'd been building distributed monoliths. Here's what changed.
Everyone sells serverless as infinitely scalable. Nobody mentions the default concurrency limit of 1,000. I found out the hard way. Let me spare you the 3 AM panic.
CloudFront is the best CDN on the planet when configured right. And an expensive, confusing mess when configured wrong. I've done both. Let me save you from the expensive part.
Your SQS messages are silently dying and you don't even know it. Dead Letter Queues are the safety net every serverless app needs - and setting them up takes 10 minutes.
Still deploying to AWS with 'git pull' over SSH? After setting up CI/CD pipelines for production serverless apps handling real traffic, here's how GitHub Actions + AWS makes deployment actually enjoyable (and way less terrifying!)
You're clicking through the AWS Console like it's 2015. Let me show you how Infrastructure as Code will save your sanity - and why I switched from CloudFormation to Terraform (and sometimes back!)
Still polling DynamoDB every 5 seconds to check for updates? Your Lambda costs are through the roof and your architecture is held together with duct tape and cron jobs? After architecting event-driven systems on AWS, here's why EventBridge changed everything!
Picked the wrong AWS database and now you're paying for it? After 7+ years architecting on AWS, here's how to choose between RDS and DynamoDB without destroying your budget, sanity, or career!
Your Lambda functions are cheap, but API Gateway is silently draining your wallet. After 7+ years architecting serverless backends, here are the API Gateway mistakes that cost me thousands!
Your EC2 bill is probably 3× higher than it needs to be. After years of architecting on AWS, here's how Auto Scaling saved me $2,400/month and taught me to stop babysitting servers!
Your Lambda is checking the database every 5 seconds 'just in case' something happened? After years of architecting event-driven systems on AWS, here's how EventBridge saved me from polling hell and cut our costs by 90%!
Your DynamoDB table has 47 indexes, costs $800/month, and queries still take 3 seconds? After architecting production NoSQL systems on AWS, here are the DynamoDB mistakes that'll drain your wallet AND your sanity!
Your Lambda has full admin access 'just to be safe'? Your access keys are hardcoded? After 7 years of AWS deployments, here are the IAM mistakes that will haunt you at 3 AM when you get the security breach notification!
Your AWS resources can't talk to each other, the internet, or you're getting mystery connection errors? After architecting production VPCs, here's how to fix AWS networking without crying into your coffee!
Your CloudWatch bill is $300/month because you're logging EVERYTHING. After years of production AWS deployments, here's how I cut our logging costs by 85% without losing visibility!
Your S3 bucket is probably leaking data AND money right now. After years of architecting on AWS, here are the S3 gotchas that bite everyone - from accidentally public buckets to storage costs that spiral out of control!