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Jakub Slys

@iam.slys.dev

π‘‡β„Žπ‘’ 𝑏𝑒𝑠𝑑 π‘‘π‘–π‘šπ‘’ π‘‘π‘œ π‘π‘™π‘Žπ‘›π‘‘ π‘Ž π‘‘π‘Ÿπ‘’π‘’ π‘€π‘Žπ‘  20 π‘¦π‘’π‘Žπ‘Ÿπ‘  π‘Žπ‘”π‘œ. 𝑻𝒉𝒆 𝒔𝒆𝒄𝒐𝒏𝒅 𝒃𝒆𝒔𝒕 π’•π’Šπ’Žπ’† π’Šπ’” π’π’π’˜.

16 Followers  |  4 Following  |  152 Posts  |  Joined: 13.12.2024  |  1.6019

Latest posts by iam.slys.dev on Bluesky

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Substack Notes Scheduler (JSON) Save time, stay consistent, and let automation handle the posting for you!

Tired of endless copy-paste for Substack Notes? Use n8n to draft in Sheets, let automation do the repetitive part, and claim your time back. Have you found a workflow hack that saves your sanity? Read more: https://iam.slys.dev/p/substack-notes-scheduler-json

08.11.2025 20:21 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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From TinyURL to Bitly (and beyond): designing a smarter URL shortener Principles and practice of system design

Turning technical stories into sticky notes? Event Storming brought our whole system to life before a line of code. Anyone else build architecture visually before coding? Read more: https://iam.slys.dev/p/from-tinyurl-to-bitly-and-beyond

08.11.2025 15:16 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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GitHub - antiwork/gumroad: Sell stuff and see what sticks Sell stuff and see what sticks. Contribute to antiwork/gumroad development by creating an account on GitHub.

Just explored Gumroad's newly open-sourced codebase. It's like opening the hood on modern creator commerce: Ruby, Node, Docker, S3, and so much more. There are so many real-world patterns here! Would you build your own shop with it?

opensource ecommerce devbuild

08.11.2025 12:13 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Substack Notes Scheduler (JSON) Save time, stay consistent, and let automation handle the posting for you!

Scheduling Substack Notes isn’t just about efficiencyβ€”it’s about reclaiming brain space for real creativity. If you had less admin, what would you build next?

07.11.2025 20:21 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Sharding vs partitioning vs replication: Embrace the key differences Databases and system design

Replication is for reliability. Sharding is for scale. Replication makes sure your app stays up, not that it stores more. Ever had a replica save you from a disaster? Read more: https://iam.slys.dev/p/sharding-vs-partitioning-vs-replication

07.11.2025 15:16 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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GitHub - localstack/localstack: πŸ’» A fully functional local AWS cloud stack. Develop and test your cloud & Serverless apps offline πŸ’» A fully functional local AWS cloud stack. Develop and test your cloud & Serverless apps offline - localstack/localstack

Simulating AWS infrastructure at home changes the game for cloud app testing. LocalStack brings dynamodb, SQS, Lambda to your laptop. Curious what workflows or surprises you've found bringing the cloud local?

serverless devops cloudtesting AWS

07.11.2025 12:13 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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From TinyURL to Bitly (and beyond): designing a smarter URL shortener Principles and practice of system design

Non-functional needs aren’t afterthoughtsβ€”they’re core. Latency, scalability, availability: which one do you put above the others in your projects? Curious which "-ility" keeps you up at night.

06.11.2025 20:21 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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No official API⁉️ No problem‼️ How I reverse-engineered Substack API (and so can you) You don’t need official docs to create real tools - just curiosity and patience

AI copilots shine when you give them clear instructions. When reverse-engineering, sharp prompts mean better codeβ€”vague ones just waste time. How specific do you get with your AI requests? Read more: https://iam.slys.dev/p/no-official-api-no-problem-how-i

06.11.2025 15:16 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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How you can build Substack Notes scheduler with n8n Save time, stay consistent, and let automation handle the posting for you!

Using n8n’s Schedule trigger feels like putting publishing on cruise control. I set my Substack Notes to go live even while I’m asleep. Anyone else rely on automation for peace of mind? Read more: https://iam.slys.dev/p/how-you-can-build-substack-notes

05.11.2025 20:21 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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GitHub - mindsdb/mindsdb: Federated query engine for AI - The only MCP Server you'll ever need Federated query engine for AI - The only MCP Server you'll ever need - mindsdb/mindsdb

Old pain: scattered data, complex pipelines. MindsDB takes a federated pathβ€”AI agents unify sources, SQL views remove barriers, Docker/Python for dev flow. Can open-source AI finally democratize enterprise knowledge?

opensource devtools AI

05.11.2025 16:16 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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From TinyURL to Bitly (and beyond): designing a smarter URL shortener Principles and practice of system design

Splitting services made scaling feel naturalβ€”ShortLink Service for writes, Redirect Service for the click floods. Does splitting always add value, or are there times monoliths win?

05.11.2025 15:16 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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CPU Caches: Why tiny memory matters? System design

LRU, FIFO, random evictionβ€”CPUs have their own way of keeping the cache tidy. When data doesn’t fit, these strategies decide who stays. Ever profiled why your code got slower? Could be a replacement policy at work. More thoughts: https://iam.slys.dev/p/cpu-caches-why-tiny-memory-matters

04.11.2025 20:21 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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No official API⁉️ No problem‼️ How I reverse-engineered Substack API (and so can you) You don’t need official docs to create real tools - just curiosity and patience

I built a TypeScript client for the Substack API because I needed the tool that didn’t exist. It’s typed, user-friendly, and lets you automate freely. Sometimes you have to invent your own bridge. What’s a tool you wish existed? Read more: https://iam.slys.dev/p/no-official-api-no-problem-how-i

04.11.2025 15:16 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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GitHub - cloudcommunity/Free-Certifications: A curated list of free courses with certifications. Also available at https://free-certifications.com/ A curated list of free courses with certifications. Also available at https://free-certifications.com/ - cloudcommunity/Free-Certifications

Ever wish there was a single place to find free, quality certifications for almost any tech field? Free-Certifications feels like a curated roadmap for lifelong learners. I wonder what career pivots this will enable for folks worldwide.

TechEducation LifelongLearning

04.11.2025 14:31 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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GitHub - HandsOnLLM/Hands-On-Large-Language-Models: Official code repo for the O'Reilly Book - "Hands-On Large Language Models" Official code repo for the O'Reilly Book - "Hands-On Large Language Models" - HandsOnLLM/Hands-On-Large-Language-Models

There’s something magical about learning AI through visuals and code. β€œHands-On LLMs” breaks down transformers, RAG, embeddings, and more with approachable, interactive examples. What parts of LLMs are you most curious to master next?

04.11.2025 14:29 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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GitHub - mindsdb/mindsdb: Federated query engine for AI - The only MCP Server you'll ever need Federated query engine for AI - The only MCP Server you'll ever need - mindsdb/mindsdb

Unify, connect, respond: MindsDB is open-source that brings all your dataβ€”and AI agentsβ€”into a single, real-time workflow. Wondering what new insights you could unlock if your data talked to you? #OpenSource #AI #DataOps

04.11.2025 13:49 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Substack automation with n8n: how to publish Notes automatically πŸš€ Step-by-step guide to using the Substack Node in n8n to create your first no-code workflow

Who needs an official Substack API? n8n lets you fetch your stats, automate Notes, and run analyticsβ€”all powered by your browser cookie. Would you trust automation with your newsletter? Why or why not? Read more: https://iam.slys.dev/p/substack-automation-with-n8n-how

04.11.2025 12:13 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Substack automation with n8n: how to publish Notes automatically πŸš€ Step-by-step guide to using the Substack Node in n8n to create your first no-code workflow

No-code tools just unlocked a new superpower for Substack creatorsβ€”automate publishing Notes through n8n, all without code. Imagine the workflows you could build. What would you automate first? Curious to hear your ideas! Read more: https://iam.slys.dev/p/substack-automation-with-n8n-how

03.11.2025 20:22 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Lead smarter in the age of AI Why every leader needs an AI thinking partner β€” and how to build yours today

What I love about the best AI tools: They don’t hand you answersβ€”they help you ask sharper questions. Curious minds win. What would you ask a decision-making AI first? Read more: https://iam.slys.dev/p/lead-smarter-in-the-age-of-ai

03.11.2025 15:17 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Substack Notes Scheduler (JSON) Save time, stay consistent, and let automation handle the posting for you!

Publishing smarter means letting low-code tools handle your routine. With the right n8n setup, you create more, stress less, and enjoy the process. Seen any great low-code tools lately?

03.11.2025 12:13 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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From TinyURL to Bitly (and beyond): designing a smarter URL shortener Principles and practice of system design

Architecture is always about trade-offs. There are no silver bullets: monolith, microservices, or serverless. How do you weigh pros and cons in your own work?

02.11.2025 20:21 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Space-Based Architecture Software architecture

Complexity is the hidden cost of advanced architectures. Space-based means lots of partitioned data and careful replication just to hit that real-time scale. Do you think the increased complexity is worth it? Let’s discuss!

01.11.2025 20:22 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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How you can build Substack Notes scheduler with n8n Save time, stay consistent, and let automation handle the posting for you!

Built a custom n8n node just to publish Notes without a public Substack API. Turns out, you really can automate almost anything if you get creative. Who else hacks their own integrations? Read more: https://iam.slys.dev/p/how-you-can-build-substack-notes

01.11.2025 12:13 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Space-Based Architecture Software architecture

Need speed but fighting memory limits? Space-based approaches give you blistering performance, but RAM can only stretch so far. Hybrid strategies try to strike a balanceβ€”would you swap a little storage cost for speed?

31.10.2025 20:21 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Lead smarter in the age of AI Why every leader needs an AI thinking partner β€” and how to build yours today

Imagine: your leadership journal is now a Telegram chat, where every important decision is logged and reflected in real time. Small tweaks, serious leverage for growth. How do you keep track of your own decisions? Read more: https://iam.slys.dev/p/lead-smarter-in-the-age-of-ai

31.10.2025 15:16 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Supercharge your Substack: Build a personalized AI assistant in a few clicks πŸš€πŸ€– Turn your latest posts and notes into new ideas with an AI sidekick powered by n8n and ChatGPT

Let your AI agent take care of the boring stuffβ€”trigger, analyze, reply, split long answers for smooth chats. Can automating these steps actually boost creativity? I think so. Share with someone who might appreciate the efficiency. Read more: https://iam.slys.dev/p/supercharge-your-substack-build-a

30.10.2025 12:13 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Supercharge your Substack: Build a personalized AI assistant in a few clicks πŸš€πŸ€– Turn your latest posts and notes into new ideas with an AI sidekick powered by n8n and ChatGPT

This isn’t just for coders. If you can drag, drop, and connect blocks, you can build your own AI assistant with n8n. What’s the first thing you’d automate for yourself? Read more: https://iam.slys.dev/p/supercharge-your-substack-build-a

30.10.2025 10:05 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

We trim tokens yet ignore end-to-end latency. Profile compute, serialization, network, caches, retrieval. Apply batching, quantization, caching, admission control. Faster responses at lower spend, without quality loss. Where's your biggest latency bottleneck?...

29.10.2025 15:35 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Why we need Queues - and what they do when no one is watching System design fundamentals

Dive into the world of queues: consumer groups, offsets, DLQs. Each concept is a lever for reliability and scale. Which queueing feature has saved your skin most?

29.10.2025 12:13 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Why we need Queues - and what they do when no one is watching System design fundamentals

RabbitMQ, Kafka, SQSβ€”they’re not just moving bytes. They set the rhythm, orchestrate the flow. Got a favorite queueing tool for your projects?

28.10.2025 15:16 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

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