Mentoxis · Blog
Notes on interviews and careers.
Essays on system design, frontend and backend interviews, and what it actually takes to land an offer at a product-based company.
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Intelligence Finally Got Cheap: What DeepSeek V4 Flash 0731 Means for Agentic Workflows
Cheap models were never the missing piece. There were plenty, it was the intelligence vs cost that DeepSeek cracked.
Parminder PoonianAugust 11, 20266 min read
system-design-interviewredisinterview
Caching in System Design Interviews: A Deepdive
A practical guide to caching in system design - where to cache, which strategy to use, how it fails, and when caching makes things worse.
Parminder PoonianAugust 11, 202612 min read
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How to optimize your AI cost?
We have all faced this. You give your AI coding agent a normal task, let it work for some time, and suddenly a large part of your hourly or weekly limit is poof gone.
Parminder PoonianAugust 8, 202616 min read
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The 2026 Frontend Interview Roadmap
A step-by-step, in-order frontend interview roadmap for 2026 — from core HTML/CSS/JS foundations through TypeScript, React depth, system design, machine coding, and the AI-fluency layer most candidates skip.
MentoxisAugust 7, 20265 min read