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⚡ AI Lessons
Dev.to · HelperX
⚡ AI Lesson
3w ago
Migrating a SQLite Schema in Production Without Locking Writers
I've written before about why we run SQLite in production for HelperX, and about multi-tenant...
Dev.to · HelperX
🧠 Large Language Models
⚡ AI Lesson
4w ago
Feeding the LLM the Whole Thread: Prompt Chaining for Contextual Replies
I wrote earlier about our persona engine — how we make one LLM sound like many different people. But...
Dev.to · HelperX
🤖 AI Agents & Automation
⚡ AI Lesson
4w ago
A Jittered Delay Engine That Doesn't Look Like a Bot
Every action HelperX takes on X — a reply, a post, a follow, a DM — is preceded by a delay. The delay...
Dev.to · HelperX
1mo ago
How I Detect Already-Replied Comments Without an API: Reply Deduplication
The Reply to Comments module in HelperX does something that sounds simple: auto-respond to comments...
Dev.to · HelperX
⚡ AI Lesson
1mo ago
Designing an Author-Filter Pipeline: Short-Circuiting From Cheap to Expensive Checks
At HelperX, the Reply (Search) and Reply (List) modules have to decide, for every tweet they...
Dev.to · HelperX
☁️ DevOps & Cloud
⚡ AI Lesson
1mo ago
Structured Logging That Actually Helps Debugging at 3 AM
Most logging is written for the person who wrote the code. The author knows the system, knows what...
Dev.to · HelperX
⚡ AI Lesson
1mo ago
Multi-Tenant Data Isolation in SQLite: Per-User Database Files vs Row-Level
When you build a multi-tenant SaaS, the first big architectural decision is how to isolate tenant...
Dev.to · HelperX
⚡ AI Lesson
1mo ago
SQLite Backup Strategy for Production SaaS: WAL, Litestream, Recovery Tests
Running SQLite in production for a multi-tenant SaaS means giving up the operational comfort of a...
Dev.to · HelperX
1mo ago
LLM Cost Optimization: How We Cut Reply Generation from $0.011 to $0.0009
When we shipped the first version of AI-generated replies for HelperX, each reply cost us about...
Dev.to · HelperX
1mo ago
Browser Fingerprint Randomization: Beyond User-Agent Rotation
If you're building automation that touches platforms with serious anti-bot systems, User-Agent...
Dev.to · HelperX
1mo ago
Server-Side Rate Caps You Can't Bypass: Why Client Trust Is a Security Bug
Every automation platform has limits. Daily action caps, hourly quotas, request budgets. The question...
Dev.to · HelperX
⚡ AI Lesson
1mo ago
Graceful Degradation: Circuit Breakers for External API Dependencies
When your application depends on external APIs that you don't control, failures are not a question of...
Dev.to · HelperX
🧠 Large Language Models
⚡ AI Lesson
1mo ago
Building a Persona Engine: How We Make AI Sound Like Different People
The hardest part of AI-generated social media content isn't making it grammatically correct. It's...
Dev.to · HelperX
☁️ DevOps & Cloud
⚡ AI Lesson
1mo ago
Designing an Audit Log That Actually Helps: Timestamps, Actions, and Forensics
Most SaaS audit logs are write-only graveyards — thousands of rows nobody reads until something goes...
Dev.to · HelperX
☁️ DevOps & Cloud
⚡ AI Lesson
1mo ago
CycleTLS v2: Why We Ditched Axios for TLS Fingerprint-Safe HTTP
When you're automating requests against platforms that actively detect bots, your HTTP library is a...
Dev.to · HelperX
🤖 AI Agents & Automation
⚡ AI Lesson
1mo ago
AI-Generated Replies at Scale: Lessons from 100K+ Automated Responses
We've generated over 100,000 automated replies on X through HelperX. Not generic "great post!"...
Dev.to · HelperX
⚡ AI Lesson
1mo ago
Rate Limiting Done Right: Respecting X's Anti-Abuse Stack
Most rate limiting articles teach you how to enforce rate limits on your API. This article is about...
DeepCamp AI