Welcome to QAFlow! Ask questions and get answers from our community.
37
votes
0
answers
Terraform vs Pulumi for infrastructure as code in 2026?

Starting greenfield IaC. Terraform has more ecosystem but Pulumi lets me use TypeScript. Which would you choose for a long-term project?

358
Administrator asked Apr 14, 2026
52
votes
3
answers
How to handle imbalanced datasets in classification problems?

My fraud detection dataset is 99.5% legitimate transactions. SMOTE made things worse. What techniques actually work in production?

941
Administrator asked Apr 14, 2026
60
votes
4
answers
Best practices for feature engineering on time series data?

Working on demand forecasting. What feature engineering techniques (rolling windows, lag features, Fourier transforms) give the best results with XGBo...

503
Administrator asked Apr 14, 2026
4
votes
8
answers
How often should I rotate API keys and secrets in production?

We currently rotate quarterly. Seen recommendations ranging from monthly to yearly. What is the practical balance between security and operational ove...

1.2K
Administrator asked Apr 14, 2026
30
votes
7
answers
Preventing SQL injection in 2026 - is ORM enough?

Team uses Prisma for all DB queries. Is that sufficient protection or should we add additional WAF rules and input validation?

921
Administrator asked Apr 14, 2026
59
votes
1
answer
How to design for accessibility without sacrificing visual appeal?

Our designs score well on aesthetics but fail WCAG audits. Color contrast, focus states, and ARIA labels seem to constrain creativity. How do you bala...

350
Administrator asked Apr 14, 2026
3
votes
8
answers
Figma auto-layout vs Flex - when to use which?

Auto-layout has been amazing but I still struggle with complex nested layouts. When should I just use absolute positioning instead?

553
Administrator asked Apr 14, 2026
64
votes
1
answer
How to prepare for FAANG system design interviews as a mid-level engineer?

I have 4 years of frontend experience. Getting ready to interview at Google/Meta. Struggling with backend system design questions. Recommended resourc...

424
Administrator asked Apr 14, 2026
63
votes
8
answers
Should I accept a competing offer to negotiate with my current company?

Got an offer with 40% raise. Want to stay at current company but they said no matching. Is it reasonable to use the offer as leverage?

414
Administrator asked Apr 14, 2026
42
votes
6
answers
Is it too late to switch to ML engineering after 8 years as a web dev?

I am 32 with a strong web dev background. Self-studying ML for 6 months. Can I realistically land an ML role, or am I competing with PhDs for scraps?

179
Administrator asked Apr 14, 2026