Overview
What this challenge is about.
Implement HyperLogLog in Java, benchmark precision vs memory on billions of ad-bid events, and deliver a Redis migration plan. Earn a verifiable certificate.
CredentialBlockchain-anchored
ShareableLinkedIn-ready
LanguageEnglish
PaceSelf-paced
The Brief
What you'll do, and what you'll demonstrate.
Replace exact-cardinality user-counting at 1.2M events/sec with HyperLogLog sketches at under 2 percent relative error and at most 64KB per (campaign, hour) bucket.
Earning criteria — what you'll demonstrate
- Implement HyperLogLog including bias correction for low cardinalities
- Compute and verify the standard relative error of 1.04 / sqrt(2^p)
- Design a merge operation for distributed cardinality across time buckets
- Trade memory vs error in a real streaming pipeline
Program Fit
Where this fits in your program.
Sharpens the same skills your degree expects you to demonstrate.
Skills
Skills you'll demonstrate.
Each one shows up on your verified credential.
Careers
Roles this prepares you for.
Real titles. Real skill bridges. Pick the one closest to your trajectory.