One bad microservice should never take down your entire logging stack.
But it does — for 99% of teams that skip Kafka in their pipeline.
Here's the architecture that actually survives a log flood from 100+ services:
? Fluent Bit reads logs from every Kubernetes node (low RAM, language-agnostic)
? Kafka acts as the shock absorber for sudden error spikes
? Logstash or Vector enriches each line with pod metadata + trace IDs
? Elasticsearch = hot tier, 7-day searchable history
? S3 = cold tier, 1-year retention, dirt cheap
? Kibana for search, ElastAlert for paging on-call
The Kafka buffer is the one decision that turns a fragile pipeline into a bulletproof one.
Save this ? — you'll need it for your next system design round.
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