Social Engagement Platform
Messaging · Media feeds · UGC
- Optimistic messaging with server reconciliation
- Tiered media cache tuned per device memory class
- Feed prefetch without blocking the UI thread
Challenge
Instant messaging alongside media-heavy feeds — without memory pressure, chat desync on background, or scroll jank on long feeds.
Approach
Dual pipeline: lightweight messaging with optimistic delivery, plus progressive media loading with resolution-aware rendering.
Engineering decisions
01
Optimistic messaging
Messages render immediately, reconcile on server ack. Handles duplicates and out-of-order delivery.
02
Thumbnail-first media cache
Full resolution fetched in background. Eviction policies prevent OOM on media-heavy feeds.
03
Viewport-aware feed prefetch
Cursor pagination with prefetch at scroll thresholds — faster perceived loads, smooth scrolling.
Live products
Generic labels — client product names omitted.
Social platform
Reviews & recognition
Cross-language messaging
Outcome
Responsive social product with reliable messaging and stable performance as content volume grew.
Questions about architecture or team fit? Reach out directly.
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