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Aleksei Aleinikov

Senior Cloud Security & Platform Engineer. Building production-grade cloud at scale. Writing on Kubernetes, IAM, Terraform & security by design. Google Cloud Ambassador · GCP certified.

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

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Senior GCP Platform & Cloud Security Engineer

PostgreSQL-Indizes: Welcher Typ wann? (10-Mio-Zeilen-Benchmark)
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PostgreSQL-Indizes: Welcher Typ wann? (10-Mio-Zeilen-Benchmark)

#postgres #postgresindex #btree
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16 min read
PostgreSQL Indexes: Which Type to Use (10M-Row Benchmark)
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PostgreSQL Indexes: Which Type to Use (10M-Row Benchmark)

#postgres #postgresindex #btree
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16 min read
AI Gateway (LLM Gateway) erklärt: was es tut, wann Sie eins brauchen und was es kostet
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AI Gateway (LLM Gateway) erklärt: was es tut, wann Sie eins brauchen und was es kostet

#aigateway #llmgateway #llmproxy #litellm
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17 min read
AI Gateway (LLM Gateway) Explained: What It Does, When You Need One and What It Costs
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AI Gateway (LLM Gateway) Explained: What It Does, When You Need One and What It Costs

#aigateway #llmgateway #llmproxy #litellm
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17 min read
TypeScript 7 vs TypeScript 6: What Changed, What Breaks and How to Upgrade
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TypeScript 7 vs TypeScript 6: What Changed, What Breaks and How to Upgrade

#typescript7 #typescript6 #tsgo #typescriptgo
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13 min read
TypeScript 7 vs. TypeScript 6: Was sich ändert, was kaputtgeht und wie das Upgrade gelingt
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TypeScript 7 vs. TypeScript 6: Was sich ändert, was kaputtgeht und wie das Upgrade gelingt

#typescript7 #typescript6 #tsgo #typescriptgo
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14 min read
DuckDB Explained: When a Database on Your Laptop Beats SQLite, Polars and BigQuery
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DuckDB Explained: When a Database on Your Laptop Beats SQLite, Polars and BigQuery

#duckdb #duckdbvssqlite #polars #parquet
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12 min read
DuckDB erklärt: Wann eine Datenbank auf dem Laptop SQLite, Polars und BigQuery schlägt
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DuckDB erklärt: Wann eine Datenbank auf dem Laptop SQLite, Polars und BigQuery schlägt

#duckdb #duckdbvssqlite #polars #parquet
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11 min read
Das Outbox Pattern: Zuverlässige Events ohne verteilte Transaktionen
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Das Outbox Pattern: Zuverlässige Events ohne verteilte Transaktionen

#outboxpattern #transactionaloutbox #eventdrivenarchitect #microservices
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12 min read
The Outbox Pattern: Reliable Events Without Distributed Transactions
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The Outbox Pattern: Reliable Events Without Distributed Transactions

#outboxpattern #transactionaloutbox #eventdrivenarchitect #microservices
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11 min read
Muse Spark Open vs GLM 5.3 vs Kimi K3: Metas offenes Modell ist nicht das klügste, aber das günstigste
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Muse Spark Open vs GLM 5.3 vs Kimi K3: Metas offenes Modell ist nicht das klügste, aber das günstigste

#musesparkopen #glm53 #kimik3 #openweightllm
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14 min read
Muse Spark Open vs GLM 5.3 vs Kimi K3: Meta's Open Model Isn't the Smartest. It's the Cheapest to Run
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Muse Spark Open vs GLM 5.3 vs Kimi K3: Meta's Open Model Isn't the Smartest. It's the Cheapest to Run

#musesparkopen #glm53 #kimik3 #openweightllm
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13 min read
NIS2 for Cloud Teams, Part 1: Requirements Checklist for AWS, Azure and Google Cloud
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NIS2 for Cloud Teams, Part 1: Requirements Checklist for AWS, Azure and Google Cloud

#nis2 #nis2compliance #compliance #cloudsecurity
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12 min read
NIS2 für Cloud-Teams, Teil 1: Anforderungen und Checkliste für AWS, Azure und Google Cloud
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NIS2 für Cloud-Teams, Teil 1: Anforderungen und Checkliste für AWS, Azure und Google Cloud

#nis2 #nis2compliance #compliance #cloudsecurity
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13 min read
OpenTelemetry erklärt: Traces, Metriken, Logs und der Collector
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OpenTelemetry erklärt: Traces, Metriken, Logs und der Collector

#opentelemetry #observability #distributedtracing #otelcollector
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22 min read
OpenTelemetry Explained: Traces, Metrics, Logs and the Collector
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OpenTelemetry Explained: Traces, Metrics, Logs and the Collector

#opentelemetry #observability #distributedtracing #otelcollector
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21 min read
Webhooks Explained: How They Work, How to Secure Them, How to Scale Them
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Webhooks Explained: How They Work, How to Secure Them, How to Scale Them

#webhooks #webhooksecurity #hmac #idempotency
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20 min read
Webhooks erklärt: Wie sie funktionieren, wie man sie absichert und skaliert
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Webhooks erklärt: Wie sie funktionieren, wie man sie absichert und skaliert

#webhooks #webhooksecurity #hmac #idempotency
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20 min read
Mistral Large 4 vs Kolibri vs Beam: Drei Open-Weight-Modelle in vier Tagen — welches Sie selbst hosten sollten
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Mistral Large 4 vs Kolibri vs Beam: Drei Open-Weight-Modelle in vier Tagen — welches Sie selbst hosten sollten

#mistrallarge4 #alephalphakolibri #reflectionbeam #openweightllm
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18 min read
Mistral Large 4 vs Kolibri vs Beam: Three Open-Weight LLMs in Four Days — Which One to Self-Host
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Mistral Large 4 vs Kolibri vs Beam: Three Open-Weight LLMs in Four Days — Which One to Self-Host

#mistrallarge4 #alephalphakolibri #reflectionbeam #openweightllm
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17 min read
Google reCAPTCHA erklärt: v2 vs. v3 vs. Enterprise, Kosten, Score und jeder Schlüsseltyp
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Google reCAPTCHA erklärt: v2 vs. v3 vs. Enterprise, Kosten, Score und jeder Schlüsseltyp

#googlerecaptcha #captcha #recaptchav3 #recaptchaenterprise
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19 min read
Google reCAPTCHA Explained: v2 vs v3 vs Enterprise, Pricing, Scores and Every Key Type
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Google reCAPTCHA Explained: v2 vs v3 vs Enterprise, Pricing, Scores and Every Key Type

#googlerecaptcha #captcha #recaptchav3 #recaptchaenterprise
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19 min read
Claude Haiku 5.5 vs Sonnet 5.5 vs Opus 5.5: 20 Cheaper Than Sonnet — and a 100K-Token Price Cliff
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Claude Haiku 5.5 vs Sonnet 5.5 vs Opus 5.5: 20 Cheaper Than Sonnet — and a 100K-Token Price Cliff

#claudehaiku55 #claudesonnet55 #claudeopus55 #anthropicpricing
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15 min read
Claude Haiku 5.5 vs. Sonnet 5.5 vs. Opus 5.5: 20 günstiger als Sonnet – mit einer Preisstufe bei 100K Tokens
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Claude Haiku 5.5 vs. Sonnet 5.5 vs. Opus 5.5: 20 günstiger als Sonnet – mit einer Preisstufe bei 100K Tokens

#claudehaiku55 #claudesonnet55 #claudeopus55 #anthropicpricing
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15 min read
shadcn/ui vs. MUI vs. Mantine: Derselbe Screen fünfmal gebaut und gemessen
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shadcn/ui vs. MUI vs. Mantine: Derselbe Screen fünfmal gebaut und gemessen

#shadcnui #mui #mantine #baseui
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11 min read
shadcn/ui vs MUI vs Mantine: I Built the Same Screen Five Ways and Measured It
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shadcn/ui vs MUI vs Mantine: I Built the Same Screen Five Ways and Measured It

#shadcnui #mui #mantine #baseui
Comments
11 min read
GPT-6.1 Sol vs. Claude Opus 5.5: Halber Preis, andere Klasse – und wo der Abstand verschwindet
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GPT-6.1 Sol vs. Claude Opus 5.5: Halber Preis, andere Klasse – und wo der Abstand verschwindet

#gpt61sol #claudeopus55 #gpt61solvsopus55 #gpt6astra
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12 min read
GPT-6.1 Sol vs Claude Opus 5.5: Half the Price, a Different Tier — and Where the Gap Disappears
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GPT-6.1 Sol vs Claude Opus 5.5: Half the Price, a Different Tier — and Where the Gap Disappears

#gpt61sol #claudeopus55 #gpt61solvsopus55 #gpt6astra
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12 min read
Cilium vs Calico: Welches Kubernetes-CNI gehört in Ihren Produktionscluster?
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Cilium vs Calico: Welches Kubernetes-CNI gehört in Ihren Produktionscluster?

#cilium #calico #kubernetescni #ebpf
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18 min read
Cilium vs Calico: Which Kubernetes CNI Should Run Your Production Cluster?
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Cilium vs Calico: Which Kubernetes CNI Should Run Your Production Cluster?

#cilium #calico #kubernetescni #ebpf
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18 min read
Gemini 4 Argon on Google Cloud: What Actually Changes for Platform Teams (2026)
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Gemini 4 Argon on Google Cloud: What Actually Changes for Platform Teams (2026)

#gemini4argon #vertexai #geminienterpriseagen #googlecloud
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8 min read
Gemini 4 Argon auf Google Cloud: Was sich für Platform-Teams wirklich ändert (2026)
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Gemini 4 Argon auf Google Cloud: Was sich für Platform-Teams wirklich ändert (2026)

#gemini4argon #vertexai #geminienterpriseagen #googlecloud
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9 min read
Agent Skills erklärt: SKILL.md, Claude Skills und wann sie MCP schlagen
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Agent Skills erklärt: SKILL.md, Claude Skills und wann sie MCP schlagen

#agentskills #claudeskills #skillmd #claudecodeskills
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16 min read
Agent Skills Explained: SKILL.md, Claude Skills and When to Use Them Instead of MCP
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Agent Skills Explained: SKILL.md, Claude Skills and When to Use Them Instead of MCP

#agentskills #claudeskills #skillmd #claudecodeskills
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16 min read
WebMCP erklärt: Wie Chrome deine Website zum MCP-Server für KI-Agenten macht
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WebMCP erklärt: Wie Chrome deine Website zum MCP-Server für KI-Agenten macht

#webmcp #mcp #modelcontextprotocol #chromewebmcp
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15 min read
WebMCP Explained: How Chrome Turns Your Website Into an MCP Server for AI Agents
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WebMCP Explained: How Chrome Turns Your Website Into an MCP Server for AI Agents

#webmcp #mcp #modelcontextprotocol #chromewebmcp
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14 min read
Claude Sonnet 5.5 vs. Opus 5.5: Halber Preis, fast gleiche Scores – und eine Routing-Falle
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Claude Sonnet 5.5 vs. Opus 5.5: Halber Preis, fast gleiche Scores – und eine Routing-Falle

#claudesonnet55 #claudeopus55 #anthropicpricing #llmmodelrouting
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14 min read
Claude Sonnet 5.5 vs Opus 5.5: Half the Price, Nearly the Same Scores — and a Routing Trap
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Claude Sonnet 5.5 vs Opus 5.5: Half the Price, Nearly the Same Scores — and a Routing Trap

#claudesonnet55 #claudeopus55 #anthropicpricing #llmmodelrouting
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14 min read
Claude Code Modes Compared: Why Plan Mode Died and What Replaced It
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Claude Code Modes Compared: Why Plan Mode Died and What Replaced It

#claudecode #planmode #automode #permissionmodes
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13 min read
Claude-Code-Modi im Vergleich: Warum der Plan-Modus tot ist und was ihn ersetzt
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Claude-Code-Modi im Vergleich: Warum der Plan-Modus tot ist und was ihn ersetzt

#claudecode #planmode #automode #berechtigungsmodi
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13 min read
Rogue AI Agents Hacked a Government Site — Nobody Told Them To
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Rogue AI Agents Hacked a Government Site — Nobody Told Them To

#aiagentsecurity #openaiagents #agenticaihacking #llmsecurity
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9 min read
Autonome KI-Agenten haben eine Regierungsseite gehackt — niemand hat sie darum gebeten
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Autonome KI-Agenten haben eine Regierungsseite gehackt — niemand hat sie darum gebeten

#kiagentensicherheit #openaiagenten #agentischekihacking #llmsicherheit
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9 min read
AWS vs Google Cloud vs Azure Free Tier: What Is Actually Free, and What Bills You
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AWS vs Google Cloud vs Azure Free Tier: What Is Actually Free, and What Bills You

#awsfreetier #googlecloudfreetier #azurefreeaccount #cloudcredits
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11 min read
AWS vs Google Cloud vs Azure Free Tier: Was wirklich kostenlos ist und was dir eine Rechnung schickt
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AWS vs Google Cloud vs Azure Free Tier: Was wirklich kostenlos ist und was dir eine Rechnung schickt

#awsfreetier #googlecloudfreetier #azurefreeaccount #cloudguthaben
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11 min read
SQLite mit Go: Treiber, WAL, Locking und Production Patterns
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SQLite mit Go: Treiber, WAL, Locking und Production Patterns

#golangsqlite #gosqlite3 #sqlitewal #databasesql
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13 min read
SQLite in Go: Drivers, WAL, Locking and Production Patterns
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SQLite in Go: Drivers, WAL, Locking and Production Patterns

#golangsqlite #gosqlite3 #sqlitewal #databasesql
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13 min read
Kubernetes 1.35 to 1.38: What Actually Changes in Production
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Kubernetes 1.35 to 1.38: What Actually Changes in Production

#kubernetes137 #kuberneteslatestvers #kubernetes138 #kubernetesupgrade
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13 min read
Kubernetes 1.35 bis 1.38: Was sich in Produktion wirklich ändert
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Kubernetes 1.35 bis 1.38: Was sich in Produktion wirklich ändert

#kubernetes137 #kubernetesaktuelleve #kubernetes138 #kubernetesupgrade
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14 min read
Jev vs. GPT-5 und Claude für Klassifizierung und Routing
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Jev vs. GPT-5 und Claude für Klassifizierung und Routing

#jev #llmrouting #kiklassifizierung #structuredoutputs
Comments
14 min read
Jev vs GPT-5 and Claude for Classification and Routing
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Jev vs GPT-5 and Claude for Classification and Routing

#jev #llmrouting #aiclassification #structuredoutputs
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13 min read
Migrating from Jest to Vitest: What Actually Breaks
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Migrating from Jest to Vitest: What Actually Breaks

#vitest #jest #javascripttesting #testmigration
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7 min read
Von Jest zu Vitest migrieren: Was wirklich kaputtgeht
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Von Jest zu Vitest migrieren: Was wirklich kaputtgeht

#vitest #jest #javascripttesting #testmigration
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7 min read
Five Python Libraries for Data Visualization: Which One and When
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Five Python Libraries for Data Visualization: Which One and When

#matplotlib #seaborn #plotly #bokeh
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9 min read
Fünf Python-Bibliotheken für Datenvisualisierung: Welche wann
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Fünf Python-Bibliotheken für Datenvisualisierung: Welche wann

#matplotlib #seaborn #plotly #bokeh
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8 min read
The Cloud Bill You Did Not Estimate: FinOps Across AWS, GCP and Azure
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The Cloud Bill You Did Not Estimate: FinOps Across AWS, GCP and Azure

#finops #cloudcostoptimizatio #egressfees #natgateway
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10 min read
Die Cloud-Rechnung, die du nicht kalkuliert hast: FinOps bei AWS, GCP und Azure
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Die Cloud-Rechnung, die du nicht kalkuliert hast: FinOps bei AWS, GCP und Azure

#finops #cloudkosten #egressgebuehren #natgateway
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10 min read
vLLM vs Ollama: Which Inference Server You Actually Need in 2026
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vLLM vs Ollama: Which Inference Server You Actually Need in 2026

#vllm #ollama #llminference #inferenceserver
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8 min read
vLLM vs. Ollama: Welchen Inference-Server Sie 2026 wirklich brauchen
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vLLM vs. Ollama: Welchen Inference-Server Sie 2026 wirklich brauchen

#vllm #ollama #llminferenz #inferenceserver
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8 min read
Passkeys vs. Passwörter: Wie WebAuthn wirklich funktioniert, wer was anbietet und wie man es einführt
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Passkeys vs. Passwörter: Wie WebAuthn wirklich funktioniert, wer was anbietet und wie man es einführt

#passkeys #webauthn #fido2 #passwortloseauthenti
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11 min read
Passkeys vs Passwords: How WebAuthn Actually Works, Who Builds What, and How to Roll It Out
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Passkeys vs Passwords: How WebAuthn Actually Works, Who Builds What, and How to Roll It Out

#passkeys #webauthn #fido2 #passwordlessauthenti
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11 min read
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