ByteDance / TikTokSystem Design·60 minMembers
Recent Like Count and Top Posts in a Sliding Window
Members only
Design the last-minute like-count backend for a social platform: exact count for one post, global top posts over the last minute, and region-based top posts over the same window.
SWE
feed
ranking
streaming
sliding-window
redis
kafka
top-k
scaling
medium
Frequency
Single report
Last asked
2026-06-11
Stage
onsite-system-design
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