LinkedIn's Activity Feed Architecture

GENERALArchitecture
LinkedIn's Activity Feed Architecture — GENERAL architecture diagram

About This Architecture

How LinkedIn assembles the professional feed for 900M+ members. Shows content ingestion through Kafka, Feed Mixer combining posts from connections, ML Ranking Service for relevance scoring, Social Graph on Espresso, Profile Cache on Couchbase, followed feed index, notification service, and A/B testing.

Architecture prompt

How LinkedIn assembles the professional feed for 900M+ members. Shows content ingestion through Kafka, Feed Mixer combining posts from connections, ML Ranking Service for relevance scoring, Social Graph on Espresso, Profile Cache on Couchbase, followed feed index, notification service, and A/B testing.

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About This Architecture

How LinkedIn assembles the professional feed for 900M+ members. Shows content ingestion through Kafka, Feed Mixer combining posts from connections, ML Ranking Service for relevance scoring, Social Graph on Espresso, Profile Cache on Couchbase, followed feed index, notification service, and A/B testing.

LinkedIn's Activity Feed Architecture

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Created by

February 9, 2026

Updated

May 7, 2026 at 1:50 PM

Type

architecture

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