Data Aggregation
Everything on SkillVeris tagged Data Aggregation — collected across the glossary, study notes, blog, and cheat sheets.
7 resources across 1 library
Interview Questions(7)
What Is Downsampling in Time-Series Databases?
Downsampling is the process of reducing high-resolution time-series data into lower-resolution aggregates (like per-minute or per-hour averages) after it ages…
How to Design an Ad Click Aggregator
An ad click aggregator ingests a high-throughput stream of click events, deduplicates and validates them, then rolls them up into per-ad, per-time-window count…
How to Design a Polling System?
A polling system (like Slido or Mentimeter) is designed around a write-heavy vote-ingestion path decoupled from a read-heavy results path, using an append-only…
How to Design a Survey Platform?
A survey platform (like Google Forms or Typeform) is designed around a flexible schema-per-survey data model that stores question definitions separately from r…
How to Design a Real-Time Analytics Dashboard?
A real-time analytics dashboard is designed around a streaming ingestion pipeline that continuously aggregates raw events into pre-computed rollups at multiple…
What is the API Composition Pattern?
API composition is a query pattern where a dedicated composer (an API gateway, BFF, or aggregator service) invokes several microservices in parallel or sequenc…
What is the Backend for Frontend (BFF) Pattern?
The Backend for Frontend (BFF) pattern gives each distinct client type — web, mobile, third-party partner — its own dedicated backend layer that shapes, aggreg…