Aleksei Aleinikov
@Aleksei_gr1
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38
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419
Cloud DevOps & Senior Software Engineer with 10+ years in cloud-native systems, backend engineering (Go, Python, Node.js), and infra. automation | Writer
Thessaloniki, Greece
Joined July 2023
🚀 Data volumes soar, but latency can’t wait! Bloom filters offer a tiny-memory, lightning-fast “probably yes / definitely no” solution for duplicate checks, deduplication, and cache lookups. #JavaScript #MemoryManagement #Frontend #BloomFilters #TechTips.
javascript.plainenglish.io
Data volumes keep ballooning, yet users still expect sub-second responses.
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⏳ Go’s `defer` — cleanup, panic safety & fewer bugs in 5 minutes. From file handles to mutexes, see 5 patterns you’ll actually use + pitfalls to avoid. 👉 #GoTips #Programming #CleanCode.
levelup.gitconnected.com
I like to learn by doing. Below I explain what defer actually does, when it shines, and a handful of compact examples with commentary.
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🦾 Build a type‑safe DSL in Go — no codegen, no fancy GADTs. Just interfaces, generics & continuations for compiler‑checked domain logic. From arithmetic rules to safe filtering — step‑by‑step. 👉 #Golang #DSL #GoLangTips #Programming.
levelup.gitconnected.com
When I design domain logic, I like to write expressions as if I were using a brand-new language — yet I want the compiler to catch every…
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⚡ CPS in Go isn’t wizardry—it’s practical power! Learn how continuation-passing style makes your code safer, cleaner, and easier to extend. 👉 #Golang #CPS #Programming #GoLangTips.
levelup.gitconnected.com
Continuation-Passing Style (CPS) is not “wizardry” from academia — it is a practical technique that can make real-world Go programs safer…
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🪞 Reflection in Go: inspect & tweak structs, auto‑register routes, build SQL & more — without boilerplate. In my 2025 guide: 4 practical examples, pitfalls to avoid, and when reflection is worth it. 👉#Golang #Coding #GoLangTips.
levelup.gitconnected.com
Hello! Below is a concise, self-contained walkthrough on getting the most out of reflection in Go
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🧩 In 2025, I skip the algorithm‑grind before interviews — and it works. Instead: clarify, decompose, test, reason out loud. Interviews should show how you think, not what you crammed last night. .#TechCareers #Interviews #Programming.
javascript.plainenglish.io
I don’t “grind” before algorithm interviews.
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🔐 Frontend security in 2025 isn’t about perfection, but managed risk and fast recovery. From threat modeling to automation, session protection to supply chain trust.#FrontendSecurity #WebDev #InfoSec #JavaScript.
javascript.plainenglish.io
In this article I talk about frontend security in plain language: why business cares, how to embed it without illusions, how to prepare for…
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⏳ Click = primary, Hold = secondary — no extra icons, no clutter. In 2025, I use a tiny CSS+JS trick to detect long‑press reliably without timers. Faster UI, cleaner code. 👉 Full guide #CSS #JavaScript #WebDev #UIDesign.
javascript.plainenglish.io
In web interfaces, I often need to distinguish a short press from a long press.
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🚀 Lightweight containers for Raspberry Pi & beyond in 2025: Cut bloated images from 500MB to under 20MB with patchelf, strace, or static compilation. .#Docker #DevOps #RaspberryPi #Containers #EdgeComputing.
medium.datadriveninvestor.com
Why bother cutting megabytes in 2025?
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🚀 End‑to‑end tracing in 2025: OpenTelemetry + auto‑instrumented DB + one HTTP middleware = find bottlenecks in minutes, not hours. Keep prod smooth!.#Observability #DistributedTracing #DevOps #DataDriven #Programming #Golang.
medium.datadriveninvestor.com
Modern systems are a constellation of microservices, queues, jobs, and databases.
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🚀 Apache Airflow is your 2025 data orchestra conductor — automating CRM syncs, ML checks & more. Spin up your first DAG and keep pipelines flowing flawlessly! .👉 Full guide .#DataEngineering #BigData.
medium.com
Apache Airflow is the conductor of your data orchestra: it builds task graphs, enforces dependencies, and alerts you the moment a note is…
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🚀 The Big Data era ended—Smart Data is here! By 2025, businesses need clean, relevant, and valuable data that drives real decisions.👉 Dive into the full story #SmartData #DataEngineering #BigData #DataScience #TechTrends.
medium.com
Not long ago “collect everything” was the mantra. By 2025 it is clear: size alone solves nothing — businesses need answers, not petabytes…
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🚀 GPT‑5 isn’t just “GPT‑4 but bigger” — it’s faster, deeper & more reliable. From long‑context docs to real repo fixes, here’s why 2025’s AI leap matters. 👉 Full story #GPT5 #AI #OpenAI #Tech #ArtificialIntelligence.
medium.com
OpenAI likes to say, “GPT-3 was a schoolkid, GPT-4 a college student, GPT-5 an expert.”
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😅 Mockups change, deadlines burn, bugs pop up on smart‑TVs… Why do front‑end devs sigh but stay in the craft?.My inside look — from chaos to release-day joy. 👉 Full story #JavaScript #Frontend #WebDev #DeveloperLife.
javascript.plainenglish.io
Why a Front-End Developer Sighs but Stays in the Craft
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🚀 Redis at high load: my tricks for max speed & memory. Patterns, code, cleanup, scaling — all battle‑tested on 3M metrics/sec. 👉 Full story #Redis #DataEngineering #Performance.
blog.dataengineerthings.org
Spectra ingests about 3 million metrics per second but stores only the hot subset — roughly 20 k / s. Every minute it evaluates 26 thousand triggers, and around 2 thousand notifications are sent…
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🚀 Sidecars in Go = clean code, zero clutter. Log, cache, rate-limit, and secure—without touching your app. Full recipe 👇. #GoLang #Microservices #CleanCode #DevOps #SidecarPattern.
levelup.gitconnected.com
In a microservice landscape we want every service to focus on its core value, yet logging, caching, security, throttling and metrics never…
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📦 Go gets fluent in 2025. Build clean, expressive pipelines with custom iterator chains — no more clunky `for` loops. Map, filter, reverse, collect — all lazy, all readable.#Golang #GoLang2025 #Programming #Iterators #CleanCode #SoftwareDevelopment.
levelup.gitconnected.com
Go now lets us declare our own iterators, so traversing data no longer requires bulky for loops.
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⚙️ Threads are heavy. Coroutines are lean. In 2025, stackless wins for speed and scale. Want 10k tasks on a laptop? This is how 👇. #Golang #Concurrency #Programming #Stackless #Async.
levelup.gitconnected.com
Why Bother with Processes and Threads at All?
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🚰 Streams run the real magic in Node.js — from massive logs to real-time games. Memory-efficient, backpressure-aware, and chainable like Lego. In 2025, you pipe(), or you pause. 👇. #NodeJS #JavaScript #Streams #WebDev #BackendDevelopment.
javascript.plainenglish.io
Sooner or later every Node.js developer meets the concept of a stream.
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🧠 In 2025, I stopped chasing perfection and started shipping. Over-architecture, over-testing, over-optimizing — all slowed me down. Turns out, “good enough” is often perfect. 👇. #DevLife #SoftwareDevelopment #WebDev #JavaScript #EngineeringWisdom.
javascript.plainenglish.io
Early in my career I believed a “real” developer must apply every best practice and follow every rule to the letter.
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