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Alex Ewerlöf Notes

blog.alexewerlof.com

Technical Leadership, Reliability Engineering, Growth. Click to read Alex Ewerlöf Notes, a Substack publication with tens of thousands of subscribers.

DevOps / SRE / infrastructureEngineering management / careersAI / MLSoftware / engineering practice

’20’21’22’23’24’25’26
Posts
126 from 24 Sep 2020 to 26 Oct 2026
Posting
monthly (23 in the last year)
Kind
personal blog
Feed
https://blog.alexewerlof.com/feed

2026 18

  1. The Lethal Trifecta
  2. The rise and fall of Jev hype
  3. Hot take
  4. Introducing ai5nines
  5. Coding is NOT solved
  6. What would you do if you had a computer of your own?
  7. Optimizing prompt cache
  8. AI Reliability Engineering
  9. Sampling args in llama-server
  10. LinkedOut
  11. Using local LLMs for agentic coding
  12. Reliability Engineering for Air-Gapped Systems
  13. Github Copilot vs Google Antigravity
  14. AI firewall
  15. OWASP Top 10 Agents & AI Vulnerabilities (2026 Cheat Sheet)
  16. RAG vs SKILL vs MCP vs RLM
  17. Multi-Agent System Reliability
  18. AI Fluency Leveling

2025 20

  1. Foundation vs. Instruct vs. Thinking Models
  2. Emergent properties
  3. AI Systems Engineering Patterns
  4. 3 levels of writing
  5. Fitting parts
  6. AI topology
  7. Introducing: Local Browser AI
  8. SLI Evolution Stages
  9. SLI Compass: Fidelity and Granularity
  10. Service Level Topology
  11. SLA vs SLO
  12. Wardley Maps & Pace Layering for Senior Tech Leads and Engineering Leaders
  13. Ephemeral taskforce
  14. When a team is too big
  15. Staff archetypes can be anti-patterns
  16. Staff+ self-onboarding questions
  17. Premature optimization
  18. Async map with limited parallelism in JavaScript
  19. Gen AI assimilation
  20. Your business value

2024 40

  1. Vod
  2. Open prison theory
  3. Mapping reliability to accountability
  4. Engineering grading systems
  5. Best Practice vs Fit Practice
  6. Accountable vs Responsible
  7. Staff Engineer vs Engineering Manager
  8. How can engineer leaders stay technical?
  9. Cargo culting
  10. SLI vs KPI
  11. Breaking a role to multiple titles
  12. Architect = UX
  13. Ivory Tower Architect
  14. Service Level Terminology
  15. SLO: Elastic vs Datadog vs Grafana
  16. Heterogeneous SLI vs Homogeneous SLI
  17. Sls
  18. Kebab vs Cake organization
  19. Organization Architecture
  20. Reliability Engineering Mindset
  21. Degradation vs disruption
  22. Percentile
  23. Service level adoption obstacles
  24. Service
  25. Slo
  26. Webcast: How to become a Staff+ engineer
  27. Nfr
  28. Principal Engineer
  29. My Podcast Episode on Alphalist
  30. Composite SLO
  31. T pop
  32. Service Level Agreement
  33. 3L
  34. Introduction to Staff Engineering
  35. You should never be responsible for what you don't control
  36. When Staff Engineer is an anti-pattern
  37. SRE Archetypes
  38. Tech bet
  39. What can we learn from Spotify layoffs?
  40. If you’re laid off

2023 34

  1. SLO Compliance Period (AKA SLO Window)
  2. Lagom SLO
  3. Introducing Service Level Calculator
  4. 10x/9 Rule
  5. Service Level Indicators
  6. Multi-tiered SLOs
  7. Washing machine vs laundry room
  8. Beyond Staff Engineer
  9. Senior to Staff Engineer
  10. Reliability Engineering Mindset
  11. SLI measurement location
  12. Definition of good in SLI
  13. SLI: Valid vs Total
  14. Change the horse!
  15. Time based vs Event based SLIs
  16. Throwing money at point A to get to D
  17. 6 Archetypes of Broken Ownership
  18. Fallback
  19. The problem with social media
  20. Failover
  21. Come to the office
  22. You build it, you own it
  23. Meeting budget
  24. Calendar Defragmentation
  25. Meeting-free days
  26. Async meeting
  27. Less meetings, more focused work
  28. Unfair teamwork
  29. Why care about service level?
  30. Giving up privacy in exchange for...
  31. Technical Committee Lifecycle
  32. A TPM and a Staff Engineer walk into a bar
  33. Why return to the office?
  34. We invested 10% to pay back tech debt; Here's what happened

2022 13

  1. Strategy glossary
  2. I failed 3 job applications; Here's what I learned
  3. Strategy basics
  4. Onboarding Staff+ Engineers
  5. If modern software products were released like modern cars!
  6. I read 5 books, tops!
  7. 6 ways staff engineers help reach clarity
  8. "Year" is not a unit of measurement for experience
  9. 4 maturity levels in the mobility industry
  10. This is not a direct message!
  11. When companies feel stressed
  12. Skill overrides name-drop
  13. On reinventing the wheel

2020 1

  1. Career Ladder