Backend & APIs

HTTP services, microservices, RPC, auth, caching, and resilient API design.

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DEV Community
dev.to > shaam_ai > hetzner-free-ai-inference-api-how-to-use-europes-newest-zero-cost-llm-endpoint-in-2026-3p8

Hetzner Free AI Inference API: How to Use Europe's Newest Zero-Cost LLM Endpoint in 2026

12+ min ago   (1120+ words) Last verified: 2026-08-12 · Free while experimental · No SLA · EU data centers · OpenAI-compatible · Rate limits: 3M input / 60K output tokens per 60 seconds Volatile facts: Pricing, models, and limits may change once the experiment ends. Hetzner has not published future token prices. Always re-check the…...

DEV Community
dev.to > shaam_ai > llm-model-routing-in-2026-the-guide-every-team-should-read-4a8c

LLM Model Routing in 2026: The Guide Every Team Should Read

14+ min ago   (1655+ words) Most teams still pick one LLM and send every request to it. That worked in 2023 when there were three viable models. In 2026, with dozens of frontier, mid-tier, and specialist models — each with different pricing, latency, and quality profiles — committing to…...

DEV Community
dev.to > mtahir27 > scaling-event-driven-apis-real-time-websockets-and-redis-pubsub-for-high-concurrency-apps-90b

Scaling Event-Driven APIs: Real-Time WebSockets and Redis Pub/Sub for High-Concurrency Apps

38+ min ago   (480+ words) From a business perspective, system instability during peak usage events directly damages user retention, degrades brand trust, and triggers SLA violations. For e-commerce, financial platforms, and real-time gaming, a latency spike or dropped connection state can result in direct financial…...

DEV Community
dev.to > starnikov > a-telegram-job-alert-bot-in-60-lines-of-python-on-live-ats-data-k9a

A Telegram job alert bot in 60 lines of Python, on live ATS data

1+ hour, 19+ min ago   (456+ words) Job boards go stale fast. By the time a weekly digest reaches you, the interesting roles have been open for a month. So let's build the smallest thing that fixes that: a Telegram bot that wakes up, asks one API…...

DEV Community
dev.to > gouranga-das-khulna > distributed-locks-4148

Distributed Locks

2+ hour, 13+ min ago   (110+ words) One-liner: A distributed lock ensures that only one node in a cluster can perform a critical operation at a time — preventing race conditions across services. In a single-server world, a mutex or semaphore handles concurrency. But in distributed systems: Classic…...

DEV Community
dev.to > jjoyneriv > gh-api-paginate-slurp-jq-length-counts-pages-not-issues-1i1b

gh api --paginate --slurp --jq 'length' Counts Pages, Not Issues

2+ hour, 25+ min ago   (415+ words) gh api --paginate --slurp --jq 'length' is the command everyone reaches for to count issues in a repository. It does not count issues. It counts pages. I found this while writing pagination recipes for a toolkit, and then found the…...

DEV Community
dev.to > jones_chen_592558a62a5c44 > treating-one-day-as-a-system-primitive-1eba

Treating “one day” as a system primitive

3+ hour, 12+ min ago   (165+ words) For most AI apps, the unit of time is a request. A user sends a message, the model responds, and the workflow ends. Cogweald is designed around a different primitive: one real day. Each world can advance by at most…...

DEV Community
dev.to > khg5293 > why-parameterized-queries-matter-for-sql-security-1iem

Why Parameterized Queries Matter for SQL Security

3+ hour, 12+ min ago   (559+ words) SQL injection is one of the classic examples of what can happen when an application mixes user input directly into a database query. The underlying problem is simple. The application expects data. The database may interpret part of that data…...

DEV Community
dev.to > nio_zanghotmailcom_zang > tokeneff-an-open-source-llm-cost-meter-that-runs-locally-5440

tokeneff: An Open-Source LLM Cost Meter That Runs Locally

3+ hour, 36+ min ago   (338+ words) Most LLM dashboards show you the bill after the damage is done. You run a coding agent for an afternoon, ship a feature, and two days later your OpenAI dashboard says you spent $47. On what? Which model? Which request? You…...

DEV Community
dev.to > jadeydi > how-to-bulk-download-images-from-url-lists-to-a-zip-file-3fph

How to Bulk Download Images: From URL Lists to a ZIP File

4+ hour, 37+ min ago   (1250+ words) The most useful starting point is a list of direct image URLs. Once you have that list, you can download the files together with a browser tool or a small command-line workflow. This tutorial covers both approaches, plus a JavaScript…...