Keria

Currently making AI do useful work — one prompt at a time

Joined on Jul 27, 2026

Keria

Sep 3

How to Audit Seller Order Email APIs (Transactional Templates and Batch Sends)

#email #node #compliance

6 min read

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Keria

Sep 2

Low-Cost SMS Alert Service Design for Passwordless Backup Notifications

#sms #notifications #reliability

5 min read

Keria

Aug 31

6 Node.js Background Queue Diagnostics — Poison Retries, Attempt Caps, DLQ Redrive

#node #webhooks #queues

7 min read

Keria

Aug 30

Implementing Reminder Backend Expiry: Per-User Scheduled Notifications via Queue and Cron

#typescript #queues #scheduling

7 min read

Keria

Aug 28

Failed Digest Retries: 3 FIFO Queue Deduplication and Idempotency Costs

#queues #typescript #ecommerce

6 min read

Keria

Aug 27

Renewal Deadline Webhooks — Per-Event Queues Beyond Cron's Public HTTPS Limit

#scheduling #webhooks #queues

7 min read

Keria

Aug 26

LLM Agent Observability: Business Metrics Dashboard Alternatives, Events or a Custom API

#observability #analytics #typescript

7 min read

Keria

Aug 24

Designing US/EU SaaS OTP Login: Email, SMS, Fallback, and Rate Limits

#authentication #security #saas

6 min read

Keria

Aug 23

Node.js LLM Moderation for Logistics User Content (3 Thresholds Beyond Hard Blocking)

#node #llm #moderation

7 min read

Keria

Aug 21

Node.js Document Summaries: Choosing a Batch Queue, Polling Contract, and Export Boundary

#node #typescript #ai

5 min read

Keria

Aug 20

Vercel AI Gateway OpenRouter and Direct Providers for Portable Multi-Model Review

#node #ai #architecture

7 min read

Keria

Aug 19

Express JS OTP Login: Auditable SMS-to-Email Passwordless Access

#express #authentication #sms

6 min read

Keria

Aug 18

Provider-Portable Fintech Knowledge Summarization Through One Compatible API Endpoint

#ai #node #fintech

7 min read

Keria

Aug 16

A 4-Stage RAG PDF Pipeline for Semantic Search (with Portable Citations)

#rag #node #postgres

8 min read

Keria

Aug 15

Multi-Label Text Classification in Node.js: Exact JSON for Product Tagging

#node #llm #typescript

7 min read

Keria

Aug 14

Speech-to-text API in Node.js: mp3/wav file upload and the real cost per support call

#node #api #ai #audio

6 min read

Keria

Aug 13

Can a Marketing App API Deliver High-Quality Text Images, Social Ads, and Style Control?

#ai #imagegeneration #typescript

6 min read

Keria

Aug 12

Node.js Semantic Search: Embeddings, Rerank, and Classify Docs by Topic

#node #llm #embeddings

7 min read

Keria

Aug 11

Speech-to-Text API Pricing for European Startup Game Hiring: Compare Per-Minute Cost

#speechtotext #audiotranscription #eu #gaming

5 min read

Keria

Aug 9

Which Chatbot Runtime Handles OpenAI, Claude, and Gemini Fallback Without Key Sprawl?

#ai #saas #typescript

6 min read

Keria

Aug 8

Node.js Text and Image Safety API with JSON Schema over Chat Completions

#node #contentmoderation #jsonschema

7 min read

Keria

Aug 7

Node.js Document Q&A: Validating Chat Completion Evidence with JSON Schema

#node #documentqa #jsonschema

7 min read

Keria

Aug 6

Cheap RAG in Node.js: Token Counts, Batch Indexing, and LLM Cost Estimates

#rag #node #semanticsearch

7 min read

Keria

Aug 4

Choosing an Image Generation API: Prompt Safety Without a Moderation Endpoint

#ai #imagegeneration #moderation

8 min read

Keria

Aug 2

Picking a text-to-image API for marketing posters and social ads: style control, upscale

#ai #api #images #marketing

7 min read

Keria

Jul 31

One key, multiple models: picking a unified text-to-image generation API

#texttoimage #api #imagegen #ai

8 min read

Keria

Jul 28

Picking a text-to-image API for a SaaS app: REST, pricing, and safety

#api #node #saas #images

7 min read

DEV Community

Keria

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Writing Debut

How to Audit Seller Order Email APIs (Transactional Templates and Batch Sends)

Want to connect with Keria?

Low-Cost SMS Alert Service Design for Passwordless Backup Notifications

6 Node.js Background Queue Diagnostics — Poison Retries, Attempt Caps, DLQ Redrive

Implementing Reminder Backend Expiry: Per-User Scheduled Notifications via Queue and Cron

Failed Digest Retries: 3 FIFO Queue Deduplication and Idempotency Costs

Renewal Deadline Webhooks — Per-Event Queues Beyond Cron's Public HTTPS Limit

LLM Agent Observability: Business Metrics Dashboard Alternatives, Events or a Custom API

Designing US/EU SaaS OTP Login: Email, SMS, Fallback, and Rate Limits

Node.js LLM Moderation for Logistics User Content (3 Thresholds Beyond Hard Blocking)

Node.js Document Summaries: Choosing a Batch Queue, Polling Contract, and Export Boundary

Vercel AI Gateway OpenRouter and Direct Providers for Portable Multi-Model Review

Express JS OTP Login: Auditable SMS-to-Email Passwordless Access

Provider-Portable Fintech Knowledge Summarization Through One Compatible API Endpoint

A 4-Stage RAG PDF Pipeline for Semantic Search (with Portable Citations)

Multi-Label Text Classification in Node.js: Exact JSON for Product Tagging

Speech-to-text API in Node.js: mp3/wav file upload and the real cost per support call

Can a Marketing App API Deliver High-Quality Text Images, Social Ads, and Style Control?

Node.js Semantic Search: Embeddings, Rerank, and Classify Docs by Topic

Speech-to-Text API Pricing for European Startup Game Hiring: Compare Per-Minute Cost

Which Chatbot Runtime Handles OpenAI, Claude, and Gemini Fallback Without Key Sprawl?

Node.js Text and Image Safety API with JSON Schema over Chat Completions

Node.js Document Q&A: Validating Chat Completion Evidence with JSON Schema

Cheap RAG in Node.js: Token Counts, Batch Indexing, and LLM Cost Estimates

Choosing an Image Generation API: Prompt Safety Without a Moderation Endpoint

Picking a text-to-image API for marketing posters and social ads: style control, upscale

One key, multiple models: picking a unified text-to-image generation API

Picking a text-to-image API for a SaaS app: REST, pricing, and safety