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137Foundry

Custom Software, Built Around Your Business: Websites, mobile apps, AI agents, and automation systems designed to replace fragmented tools and recurring fees.

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5 Free Resources for Designing Better Mobile Empty States

5 Free Resources for Designing Better Mobile Empty States

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5 min read
How to Design Deep Links That Survive App Updates and Cold Starts

How to Design Deep Links That Survive App Updates and Cold Starts

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6 min read
Why Soft Deletes Beat Hard Deletes for Anything Users Can Bulk-Select

Why Soft Deletes Beat Hard Deletes for Anything Users Can Bulk-Select

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5 min read
How to Build a Selection State Manager for Data Tables With Bulk Actions

How to Build a Selection State Manager for Data Tables With Bulk Actions

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5 min read
Why Client-Side Routing Breaks Crawlability

Why Client-Side Routing Breaks Crawlability

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5 min read
How to Build a Rendering Diff Script With Node.js

How to Build a Rendering Diff Script With Node.js

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6 min read
Why AI Coding Assistants Struggle More With Migrations Than App Code

Why AI Coding Assistants Struggle More With Migrations Than App Code

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5 min read
How to Set Up a Pre-Commit Hook That Catches Hardcoded Secrets

How to Set Up a Pre-Commit Hook That Catches Hardcoded Secrets

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5 min read
How to Write a Permission Test Matrix That Actually Catches Regressions

How to Write a Permission Test Matrix That Actually Catches Regressions

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5 min read
Why Permission Checks Belong in One Function, Not Scattered Across Controllers

Why Permission Checks Belong in One Function, Not Scattered Across Controllers

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5 min read
How to Log Timestamps So Support Tickets Don't Become Timezone Detective Work

How to Log Timestamps So Support Tickets Don't Become Timezone Detective Work

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6 min read
How to Debug a Cron Job That Silently Skips Its DST Run

How to Debug a Cron Job That Silently Skips Its DST Run

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6 min read
How to Add Optimistic UI Updates Without Lying to Users When a Save Fails

How to Add Optimistic UI Updates Without Lying to Users When a Save Fails

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5 min read
How to Debug a Sync Bug You Can Only Reproduce on Flaky Wifi

How to Debug a Sync Bug You Can Only Reproduce on Flaky Wifi

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5 min read
The Hidden Cost of Silent Autosave Failures

The Hidden Cost of Silent Autosave Failures

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5 min read
How to Implement Optimistic UI Updates Without Confusing Users

How to Implement Optimistic UI Updates Without Confusing Users

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5 min read
7 Tools for Validating and Mapping JSON Schemas Between Systems

7 Tools for Validating and Mapping JSON Schemas Between Systems

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5 min read
How to Write Contract Tests That Catch a Vendor's Breaking API Change Before Production Does

How to Write Contract Tests That Catch a Vendor's Breaking API Change Before Production Does

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5 min read
The Silent Failure Mode Every Data Pipeline Eventually Hits

The Silent Failure Mode Every Data Pipeline Eventually Hits

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5 min read
How to Build a Dead Man's Switch Alert for a Cron Job

How to Build a Dead Man's Switch Alert for a Cron Job

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6 min read
How to Use Search Console URL Inspection for Canonical Debugging

How to Use Search Console URL Inspection for Canonical Debugging

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5 min read
Why Duplicate Content Isn't Actually the Penalty You Think It Is

Why Duplicate Content Isn't Actually the Penalty You Think It Is

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5 min read
8 Tools and Libraries for Building Reliable Data Sync Pipelines

8 Tools and Libraries for Building Reliable Data Sync Pipelines

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6 min read
How to Add Origin Tags to Stop Sync Echoes Between Systems

How to Add Origin Tags to Stop Sync Echoes Between Systems

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6 min read
Why Review Time Is the Real Cost Metric for AI Coding Assistants, Not Generation Speed

Why Review Time Is the Real Cost Metric for AI Coding Assistants, Not Generation Speed

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6 min read
How to Set Up a Repeatable Harness for Comparing AI Coding Assistants on Your Own Repo

How to Set Up a Repeatable Harness for Comparing AI Coding Assistants on Your Own Repo

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6 min read
The Hidden Security Risk Behind AI-Suggested Package Names

The Hidden Security Risk Behind AI-Suggested Package Names

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5 min read
How to Add a Pre-Commit Hook That Catches Hallucinated Imports

How to Add a Pre-Commit Hook That Catches Hallucinated Imports

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5 min read
How to Add an Idempotency Key to a Batch Import Script in Python

How to Add an Idempotency Key to a Batch Import Script in Python

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5 min read
Why Your Backfill Script Needs Its Own Rate Limiter, Not the One Built for Your Live Pipeline

Why Your Backfill Script Needs Its Own Rate Limiter, Not the One Built for Your Live Pipeline

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5 min read
How to Add Checksum Comparison to an Existing ETL Pipeline

How to Add Checksum Comparison to an Existing ETL Pipeline

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5 min read
Why Your CDC Pipeline Still Needs a Reconciliation Job

Why Your CDC Pipeline Still Needs a Reconciliation Job

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5 min read
Why JavaScript-Rendered Content Still Causes Indexing Problems

Why JavaScript-Rendered Content Still Causes Indexing Problems

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5 min read
How to Implement Canonical Tags Correctly Across Paginated and Parameterized URLs

How to Implement Canonical Tags Correctly Across Paginated and Parameterized URLs

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6 min read
How to Set Up a Lightweight Real User Monitoring Script

How to Set Up a Lightweight Real User Monitoring Script

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5 min read
Why Your LCP Element Usually Isn't What You Think It Is

Why Your LCP Element Usually Isn't What You Think It Is

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5 min read
6 Free Tools for Testing and Debugging Push Notification Delivery

6 Free Tools for Testing and Debugging Push Notification Delivery

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6 min read
How to Set Up Android Notification Channels So Users Don't Disable Everything

How to Set Up Android Notification Channels So Users Don't Disable Everything

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6 min read
How to Run a Lightweight Dependency Audit Before Anyone Asks You To

How to Run a Lightweight Dependency Audit Before Anyone Asks You To

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5 min read
Free Tools for Auditing Your Own Codebase Before a Technical Review

Free Tools for Auditing Your Own Codebase Before a Technical Review

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5 min read
Why Free-Tier SaaS Signups Are an Engineering Risk, Not Just an IT One

Why Free-Tier SaaS Signups Are an Engineering Risk, Not Just an IT One

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6 min read
How to Audit SSO Logs to Find Unsanctioned Apps

How to Audit SSO Logs to Find Unsanctioned Apps

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6 min read
Stale Data Is a UX Bug, Not Just a Data Engineering Problem

Stale Data Is a UX Bug, Not Just a Data Engineering Problem

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5 min read
How to Build a Freshness Check That Runs Before Your Dashboard Loads

How to Build a Freshness Check That Runs Before Your Dashboard Loads

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5 min read
How to Add Request Deduplication to a Node.js API in an Afternoon

How to Add Request Deduplication to a Node.js API in an Afternoon

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6 min read
Why Your Payment Webhook Handler Needs an Idempotency Table, Not Just a Try/Catch

Why Your Payment Webhook Handler Needs an Idempotency Table, Not Just a Try/Catch

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6 min read
How to Add a Second-Pass AI Review Step Without Slowing Your Team Down

How to Add a Second-Pass AI Review Step Without Slowing Your Team Down

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5 min read
Why AI Coding Assistants Confidently Call Methods That Don't Exist

Why AI Coding Assistants Confidently Call Methods That Don't Exist

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5 min read
Why Deprecating an API Endpoint Takes Longer Than Building It Did

Why Deprecating an API Endpoint Takes Longer Than Building It Did

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5 min read
How to Set Up Contract Testing for a REST API With OpenAPI

How to Set Up Contract Testing for a REST API With OpenAPI

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5 min read
How to Build a Lightweight Job Orchestrator Without Adopting a Heavy Scheduler

How to Build a Lightweight Job Orchestrator Without Adopting a Heavy Scheduler

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5 min read
How to Decide When a Failed Automation Job Needs a Human, Not Another Retry

How to Decide When a Failed Automation Job Needs a Human, Not Another Retry

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5 min read
How to Resume a Failed File Upload From the Last Successful Chunk

How to Resume a Failed File Upload From the Last Successful Chunk

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7 min read
Why Chunked Uploads Beat a Single PUT Request for Large Files on Mobile Networks

Why Chunked Uploads Beat a Single PUT Request for Large Files on Mobile Networks

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6 min read
How to Build an Accessible Toast Notification Component

How to Build an Accessible Toast Notification Component

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6 min read
Why ARIA Live Regions Are the Most Skipped Accessibility Feature in Frontend Dev

Why ARIA Live Regions Are the Most Skipped Accessibility Feature in Frontend Dev

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5 min read
Why AI Coding Assistants Hallucinate Functions That Were Never There

Why AI Coding Assistants Hallucinate Functions That Were Never There

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6 min read
How to Write a System Prompt That Keeps an AI Coding Assistant On Task

How to Write a System Prompt That Keeps an AI Coding Assistant On Task

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5 min read
Running a Parallel-Run Period Without Doubling the Workload

Running a Parallel-Run Period Without Doubling the Workload

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5 min read
The Maintenance Cost Nobody Budgets For

The Maintenance Cost Nobody Budgets For

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5 min read
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