Libme

I ship side projects with SaaS and AI dev tools, then write up what actually held: honest comparisons, pricing math, and the failure modes the docs skip.

Joined on Aug 4, 2026 https://diveinkr.com

Pinned

Libme

Aug 9

Postgres Full-Text Search in Production: How to Load-Test the Index and Pin Down Relevance

#postgres #database #performance #testing

6 min read

Libme

Aug 9

Webhook Reliability 101: Retries, Idempotency, and the Bugs That Bite at 2 A.M.

#api #backend #node #architecture

6 min read

Libme

Sep 8

Postgres Autovacuum Isn't Keeping Up: Diagnosing Bloat, Long Transactions, and Wraparound Warnings

#postgres #database #sql #performance

6 min read

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Libme

Sep 7

UUIDv7 vs ULID vs bigint: Which Primary Key Holds Up When the Table Gets Big?

#postgres #database #performance #architecture

7 min read

Libme

Sep 6

curl Returns 200 but Your HTTP Client Gets a 404: Debugging Vary and CDN Cache Variants

#performance #api #devops #webdev

6 min read

Libme

Sep 4

Your Logging Bill Is a Volume Problem: Model the Cost Before You Switch Vendors

#devops #cloud #saas #softwareengineering

7 min read

Libme

Sep 2

Every Deploy Throws a Few 502s: Where Graceful Shutdown Actually Breaks

#devops #kubernetes #node #docker

7 min read

Libme

Sep 2

Postgres as a Job Queue vs Redis vs SQS: When Does "Just Use Your Database" Stop Working?

#postgres #database #backend #architecture

6 min read

Libme

Sep 1

Token Streaming Works Locally but Arrives All at Once in Production: Finding the Buffer

#llm #devops #api #performance

6 min read

Libme

Aug 30

Exit Code 137: Why Your Container Gets OOMKilled While Node's Heap Looks Fine

#node #docker #kubernetes #performance

6 min read

Libme

Aug 28

Feature Flags: When a Managed Service Beats a Config Table You Own

#devops #saas #tooling #softwareengineering

7 min read

Libme

Aug 27

Why Your p99 Looks Fine While Users Complain: Averaged Percentiles and Histogram Buckets

#performance #devops #architecture #softwareengineering

6 min read

Libme

Aug 24

Is Your CDN Actually Caching? Audit Hit Ratio and Asset Fan-Out Before You Migrate Buckets

#cloud #aws #devops #performance

7 min read

Libme

Aug 24

Why Your OAuth Integration Randomly Returns invalid_grant (and How to Stop Two Workers From Racing)

#api #backend #security #postgres

7 min read

Libme

Aug 23

S3 vs R2 vs B2 for User Uploads: When Egress Fees Should Change Your Architecture

#aws #cloud #architecture #backend

7 min read

Libme

Aug 22

Before You Set plan_cache_mode, Write the Regression Test That Proves It Worked

#postgres #database #testing #performance

8 min read

Libme

Aug 22

Your Cache Expired and the Database Spiked: Four Fixes for Cache Stampedes

#performance #database #backend #architecture

7 min read

Libme

Aug 21

Rate Limiting Your Own API: Should the Counter Live in Redis, Postgres, or at the Edge?

#api #backend #architecture #performance

8 min read

Libme

Aug 21

Why Your Query Is Fast in psql but Slow From the App: Postgres Plan Caching Explained

#postgres #database #performance #backend

7 min read

Libme

Aug 20

Your Secrets Manager Ends at process.env: Where Secrets Actually Leak at Runtime

#security #devops #node #backend

7 min read

Libme

Aug 20

When Should You Move Off Managed Hosting to Kubernetes? The Thresholds That Actually Matter

#kubernetes #devops #architecture #cloud

7 min read

Libme

Aug 19

Where Should a Small Team Store Its Secrets? Comparing .env Files, SOPS, Doppler, 1Password, and Vault

#security #devops #cicd #tooling

7 min read

Libme

Aug 17

Your Postgres Migration Runner Needs a Retry Contract, Not Just a Lock Timeout

#postgres #database #devops #cicd

7 min read

Libme

Aug 17

Your Postgres Backups Are Untested Until You Restore One: A Drill for Small Teams

#postgres #database #devops #backend

7 min read

Libme

Aug 16

Why Your Docker Build Takes 11 Minutes in CI When It Takes 20 Seconds Locally

#docker #cicd #devops #github

6 min read

Libme

Aug 16

Getting 429 Too Many Requests? Fix the Client Before You Ask for a Higher Quota

#api #backend #python #performance

7 min read

Libme

Aug 15

Your Password Reset Emails Are Going to Spam: Choosing Between Resend, Postmark, and Amazon SES

#api #aws #backend #saas

7 min read

Libme

Aug 15

Postgres Says "Too Many Clients Already": Diagnose It Before You Add a Pooler

#postgres #database #devops #performance

7 min read

Libme

Aug 15

Why Your Postgres Migration Locked the Whole Table (and the Pattern That Doesn't)

#postgres #database #devops #sql

7 min read

Libme

Aug 14

Free Tier Traps: How Hobby Plans Are Designed and When They Flip to Paid

#saas #cloud #devops #startup

7 min read

Libme

Aug 14

The Real Break-Even for AI Coding Tools Includes Review Time, Not Just Typing Saved

#ai #productivity #softwareengineering #testing

6 min read

Libme

Aug 14

Build vs Buy: Authentication in 2026 (Auth0, Clerk, Supabase Auth, or Roll Your Own)

#security #saas #backend #webdev

6 min read

Libme

Aug 14

Cost Attribution Before Cost Optimization: How to Find Out What Is Actually Charging You

#aws #cloud #devops #architecture

7 min read

Libme

Aug 14

The Hidden Costs of Serverless: What Your First Big Bill Teaches You

#aws #cloud #devops

7 min read

Libme

Aug 13

The Architecture Diagram in Your Wiki Is Lying: How to Generate One From the Code Instead

#architecture #tooling #softwareengineering #productivity

6 min read

Libme

Aug 13

Dev Environment as Code: Devcontainers, Nix, or Just a Good Makefile?

#devops #tooling #docker #productivity

6 min read

Libme

Aug 13

Cutting Your Side Project's Cloud Bill: A Checklist That Doesn't Sacrifice Uptime

#cloud #aws #devops #saas

7 min read

Libme

Aug 12

When Is GitHub Copilot Actually Worth the Subscription? A Break-Even Analysis

#ai #github #productivity #tooling

6 min read

Libme

Aug 12

A Zero-Meeting Deployment Workflow: Trunk-Based Development and Feature Flags

#devops #cicd #automation #testing

7 min read

Libme

Aug 12

The Boring Stack Manifesto: Why Your Startup Probably Doesn't Need Kubernetes

#kubernetes #devops #architecture #startup

6 min read

Libme

Aug 12

Reserve KV Cache for the Output You Promised, Not Just the Prompt You Received

#llm #devops #python #performance

7 min read

Libme

Aug 11

How to Grade Search Relevance Before You Touch the Ranking Weights

#postgres #database #sql #testing

6 min read

Libme

Aug 11

Stop Guessing Your Webhook Dedup TTL: Derive It From the Delivery Contract

#api #backend #database #architecture

6 min read

Libme

Aug 11

How Long Should You Keep Idempotency Keys? A TTL Strategy for Webhook Dedup

#backend #api #postgres #architecture

7 min read

Libme

Aug 11

How to Test Search Relevance Before You Ship a Ranking Change

#postgres #database #testing #sql

6 min read

Libme

Aug 10

Admission Control for Self-Hosted LLMs: Rejecting Requests Before the KV Cache OOMs You

#llm #ai #performance #backend

6 min read

Libme

Aug 10

Monorepo or Polyrepo for a Three-Person Startup? A Decision Framework

#architecture #devops #cicd #startup

7 min read

Libme

Aug 10

An AI-Assisted Code Review Pipeline That Catches What Humans Skim Past

#ai #devops #testing #github

6 min read

Libme

Aug 10

ChatGPT Free vs Go vs Plus vs Pro: Which Tier Should a Coding Beginner Actually Pay For?

#ai #chatgpt #beginners #productivity

7 min read

Libme

Aug 10

The Solo Developer's 2026 Stack: What's Worth Paying For and What to Self-Host

#saas #devops #cloud #startup

6 min read

Libme

Aug 10

Why Your Webhook Retries Keep Creating Duplicates (and the Design That Actually Fixes It)

#api #backend #architecture #node

7 min read

Libme

Aug 10

Self-Hosting Your First LLM: What the Tutorials Skip About GPU Memory

#llm #ai #machinelearning #devops

5 min read

Libme

Aug 9

Instrument a Node.js App with OpenTelemetry in an Afternoon

#node #javascript #devops #tutorial

6 min read

Libme

Aug 9

Your Serverless Cron Job Failed Silently at 3AM: Making Event-Driven Jobs Reliable

#devops #aws #backend #architecture

6 min read

Libme

Aug 9

Build an Internal Admin Dashboard in a Day with a No-Code Tool (and When Not To)

#nocode #tooling #productivity #saas

6 min read

Libme

Aug 9

Add Full-Text Search to Your App Before Reaching for Elasticsearch

#postgres #database #sql #backend

6 min read

Libme

Aug 8

From Cron Jobs to Event-Driven: Migrating Scheduled Tasks to Serverless Functions

#devops #cloud #architecture #automation

6 min read

Libme

Aug 8

Automate Your Code Reviews with an LLM Without Annoying Your Team

#automation #github #ai #devops

6 min read

Libme

Aug 7

Vercel Pros and Cons: When It's the Right Host, and When You'll Regret It

#nextjs #webdev #devops #cloud

5 min read

Libme

Aug 7

Netlify Pros and Cons: When It's the Right Host, and When You'll Outgrow It

#webdev #devops #tooling #saas

6 min read

Libme

Aug 7

Cloudflare for Developers: What It's Great At, Where It Bites, and How to Actually Use It

#cloud #webdev #devops #performance

6 min read

Libme

Aug 7

Ship a Production RAG Chatbot in a Weekend with Claude, pgvector, and FastAPI

#python #postgres #llm #tutorial

6 min read

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