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Aleksei Aleinikov

My interests range from building complex algorithms and designing high-performance systems to applying AI to solve real-world challenges.

Location Thessaloniki, Greece Joined Joined on  Personal website https://www.alekseialeinikov.com

Work

DevSecOps

How Node.js Event Loop Really Handles I/O in 2025
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How Node.js Event Loop Really Handles I/O in 2025

#node #javascript #backend #programming
1
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1 min read
Argo CD + Vault in 2025: Stop Secrets from Breaking in Templates
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Argo CD + Vault in 2025: Stop Secrets from Breaking in Templates

#devops #argocd #kubernetes #helm
2
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1 min read
Why Your UI Tests Still Break in 2025 (and How Test IDs Fix Everything)
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Why Your UI Tests Still Break in 2025 (and How Test IDs Fix Everything)

#webdev #testing #programming #frontend
1
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1 min read
Kubernetes Claims in 2025: Stop Bleeding Resources 💸
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Kubernetes Claims in 2025: Stop Bleeding Resources 💸

#devops #webdev #programming #kubernetes
1
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1 min read
Why mTLS in 2025 Is Just Hygiene (Not a Luxury) 🔐
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Why mTLS in 2025 Is Just Hygiene (Not a Luxury) 🔐

#devops #mtls #cloud #webdev
1
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1 min read
Angular + SSR in 2025: Faster First Paint, Fewer Flickers 🚀
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Angular + SSR in 2025: Faster First Paint, Fewer Flickers 🚀

#angular #javascript #webdev #frontend
1
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1 min read
One Tool to Lint and Format: Why I Dropped Prettier in 2025 🛠️
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One Tool to Lint and Format: Why I Dropped Prettier in 2025 🛠️

#javascript #eslint #webdev #programming
2
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1 min read
How One await Cut My Response Time in Half ⚡
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How One await Cut My Response Time in Half ⚡

#node #javascript #backend #programming
1
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1 min read
Concurrency in Go: 5 Patterns You’ll Actually Use in 2025 ⚡
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Concurrency in Go: 5 Patterns You’ll Actually Use in 2025 ⚡

#go #backend #webdev #programming
1
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1 min read
One-Click Rollouts with Ansible in 2025: Inventory as a Contract ⚡
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One-Click Rollouts with Ansible in 2025: Inventory as a Contract ⚡

#ansible #devops #automation #cloud
1
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1 min read
FSD Architecture: The Truth Every Team Learns in 2025 🧩
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FSD Architecture: The Truth Every Team Learns in 2025 🧩

#javascript #frontend #webdev #programming
1
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1 min read
Your App Isn’t Slow Because of React — It’s the 500 Extra Renders 🐢
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Your App Isn’t Slow Because of React — It’s the 500 Extra Renders 🐢

#react #javascript #webdev #frontend
1
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1 min read
Camunda Without Java: Why It’s a Game-Changer in 2025 ⚙️
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Camunda Without Java: Why It’s a Game-Changer in 2025 ⚙️

#camunda #bpmn #devops #microservices
1
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1 min read
Why I Never Trust 200 Alone: Smarter API Testing in 2025 🚦
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Why I Never Trust 200 Alone: Smarter API Testing in 2025 🚦

#api #javascript #devops #webdev
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1 min read
JavaScript Coercion Demystified: Stop the “Weird Bugs” in 2025 🪄
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JavaScript Coercion Demystified: Stop the “Weird Bugs” in 2025 🪄

#javascript #webdev #programming #beginners
1
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1 min read
Reliable on Paper, Fragile in Reality: 3 Tricks Teams Use in 2025 ⚡
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Reliable on Paper, Fragile in Reality: 3 Tricks Teams Use in 2025 ⚡

#devops #monitoring #sre #webdev
1
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1 min read
Go’s net/http Demystified: Simple, No Magic ✨
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Go’s net/http Demystified: Simple, No Magic ✨

#go #api #backend #programming
1
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1 min read
Stop Flaky Go Tests in 2025: Meet synctest 🚀
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Stop Flaky Go Tests in 2025: Meet synctest 🚀

#go #testing #webdev #programming
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1 min read
🛑 Stop Sprinkling sync.Map Everywhere
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🛑 Stop Sprinkling sync.Map Everywhere

#go #webdev #programming #ai
1
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1 min read
📊 pprof in 2025: Facts > Gut Feelings
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📊 pprof in 2025: Facts > Gut Feelings

#architecture #webdev #devplusplus #programming
1
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1 min read
🔍 When top Lies and Logs Stay Quiet: Use Sysdig
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🔍 When top Lies and Logs Stay Quiet: Use Sysdig

#linux #devplusplus #devops #programming
1
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1 min read
🙈 Fifteen if err != nil in a Row? Cut the Noise.
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🙈 Fifteen if err != nil in a Row? Cut the Noise.

#go #webdev #programming #architecture
1
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1 min read
🧩 Forty Arguments? Meet Functional Options in Go (2025)
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🧩 Forty Arguments? Meet Functional Options in Go (2025)

#devops #webdev #programming #go
1
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1 min read
⚡ Go + Memory Pools: Dodging GC Pauses in 2025
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⚡ Go + Memory Pools: Dodging GC Pauses in 2025

#go #webdev #programming #design
1
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1 min read
⚡ Next.js + Go: The 2025 Dream Stack
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⚡ Next.js + Go: The 2025 Dream Stack

#nextjs #go #frontend #webdev
1
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1 min read
💤 Every Skipped Test = One More 2 a.m. Debugging
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💤 Every Skipped Test = One More 2 a.m. Debugging

#testing #go #unittest #debugging
1
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1 min read
🧩 Two DI Examples in Go That Click in 2025
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🧩 Two DI Examples in Go That Click in 2025

#go #webdev #programming #development
1
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1 min read
🚦 Rate Limiting in 2025: One Atomic “Reserve” Instead of Chaos
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🚦 Rate Limiting in 2025: One Atomic “Reserve” Instead of Chaos

#webdev #programming #api #architecture
1
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1 min read
🚀 From Java to Go in 2025: 6 Steps for a Smooth Start
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🚀 From Java to Go in 2025: 6 Steps for a Smooth Start

#java #go #programming #webdev
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1 min read
HTTPS at 80 Gbps? Yes, in Go (2025)
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HTTPS at 80 Gbps? Yes, in Go (2025)

#go #webdev #programming
1
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1 min read
🌀 JSON v2 in Go (2025): What Actually Changed
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🌀 JSON v2 in Go (2025): What Actually Changed

#go #webdev #programming
1
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1 min read
⚡ Go Arenas: Request‑Scoped Speed in 2025
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⚡ Go Arenas: Request‑Scoped Speed in 2025

#go #webdev #programming
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1 min read
🍰 Go Slices Finally Explained: Why They Behave the Way They Do
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🍰 Go Slices Finally Explained: Why They Behave the Way They Do

#go #webdev #programming #ai
1
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1 min read
🚀 RAG in Go: From Zero to Answers in One Evening
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🚀 RAG in Go: From Zero to Answers in One Evening

#ai #rag #machinelearning
1
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1 min read
Still Fighting With React Hook Tests?
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Still Fighting With React Hook Tests?

#webdev #react #programming #javascript
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1 min read
Angular in 2025: Still Struggling With Data Flow?
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Angular in 2025: Still Struggling With Data Flow?

#angular #webdev #programming #javascript
1
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1 min read
🚀 Stop Panicking at `top`: Read It Like a Pro in 2025
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🚀 Stop Panicking at `top`: Read It Like a Pro in 2025

#linux #devplusplus #devops #automation
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1 min read
⚡ Save RAM in 2025 with Bloom Filters — The Tiny Data Structure with Massive Impact ⚡
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⚡ Save RAM in 2025 with Bloom Filters — The Tiny Data Structure with Massive Impact ⚡

#webdev #programming #javascript #memory
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1 min read
⏳ Go `defer` — Master It in 5 Minutes ⚡
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⏳ Go `defer` — Master It in 5 Minutes ⚡

#go #programming #webdev #defer
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1 min read
🛠 Type‑Safe DSLs in Go — No Magic, Just Go ⚡
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🛠 Type‑Safe DSLs in Go — No Magic, Just Go ⚡

#go #webdev #programming #softwaredevelopment
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1 min read
🚀 CPS in Go: Unlock Go’s Superpowers in 2025 ⚙️
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🚀 CPS in Go: Unlock Go’s Superpowers in 2025 ⚙️

#webdev #go #programming #career
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1 min read
🔍 Go Reflection: Less Code, More Power ⚡
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🔍 Go Reflection: Less Code, More Power ⚡

#go #backend #programming #automation
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1 min read
🧠 I Don’t Grind for Algorithm Interviews — And I Still Pass 🚀
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🧠 I Don’t Grind for Algorithm Interviews — And I Still Pass 🚀

#interview #career #programming #javascript
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1 min read
🔐 Secure Your Frontend in 2025 — Pass Certification Fast 🔐
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🔐 Secure Your Frontend in 2025 — Pass Certification Fast 🔐

#security #webdev #javascript #frontend
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1 min read
🖱 Click or Hold? This CSS Trick Gives You Two Actions in One Button ⚡
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🖱 Click or Hold? This CSS Trick Gives You Two Actions in One Button ⚡

#css #frontend #webdev #javascript
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1 min read
⚡ Lightweight Containers for Raspberry Pi in 2025 — Cut Megabytes, Boost Speed ⚡
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⚡ Lightweight Containers for Raspberry Pi in 2025 — Cut Megabytes, Boost Speed ⚡

#iot #devops #docker #containers
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1 min read
🔍 End-to-End Observability 2025 — Trace Every Millisecond, Fix Issues Fast! 🔍
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🔍 End-to-End Observability 2025 — Trace Every Millisecond, Fix Issues Fast! 🔍

#devops #data #go #opensource
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1 min read
🚀 Airflow in 2025 Will Change How You Run Data Pipelines 🚀
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🚀 Airflow in 2025 Will Change How You Run Data Pipelines 🚀

#airflow #devops #database #bigdata
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1 min read
📊 Smart Data 2025 — Big Data Is Dead, Here’s What’s Next 🚀
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📊 Smart Data 2025 — Big Data Is Dead, Here’s What’s Next 🚀

#data #database #bigdata #ai
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1 min read
🤖 GPT‑5 in 2025 — Not Just an Upgrade, a Game‑Changer ⚡
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🤖 GPT‑5 in 2025 — Not Just an Upgrade, a Game‑Changer ⚡

#devops #productivity #chatgpt #ai
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1 min read
🎯 Front-End Pain Points 2025 — Surviving Between Mockups & Deadlines 🎯
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🎯 Front-End Pain Points 2025 — Surviving Between Mockups & Deadlines 🎯

#webdev #react #frontend #javascript
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1 min read
⚡ Redis in 2025 — Pushing Speed to the Limit ⚡
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⚡ Redis in 2025 — Pushing Speed to the Limit ⚡

#redis #devops #bigdata #data
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1 min read
🛰️ Sidecars in Go: Clean Code, Zero Bloat
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🛰️ Sidecars in Go: Clean Code, Zero Bloat

#go #microservices #devops
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1 min read
🔁 Elegant Iterator Chains in Go — Finally Here
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🔁 Elegant Iterator Chains in Go — Finally Here

#go #devops #devplusplus
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1 min read
⚙️ Coroutines vs Threads in 2025: What You Really Need to Know
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⚙️ Coroutines vs Threads in 2025: What You Really Need to Know

#go #webdev #programming
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1 min read
📦 Mastering Node.js Streams in 2025
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📦 Mastering Node.js Streams in 2025

#javascript #webdev #programming #backend
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1 min read
🛑 Perfectionism Slowed Me Down — Here’s What I Learned
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🛑 Perfectionism Slowed Me Down — Here’s What I Learned

#development #programming #devops #microsoft
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1 min read
🔐 Safe String Keys in TypeScript — No More Silent Failures
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🔐 Safe String Keys in TypeScript — No More Silent Failures

#typescript #javascript #webdev #programming
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1 min read
🚀 Scaling With Go in 2025: Concurrency That Works
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🚀 Scaling With Go in 2025: Concurrency That Works

#go #concurrency #programming
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1 min read
Secret bytes 2025: hide anything inside a PNG!
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Secret bytes 2025: hide anything inside a PNG!

#security #webdev #frontend #png
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1 min read
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