Answer
High log throughput stresses buffers, causing IO throttling, CPU spikes, and dropped logs.
Quick Answer
Docker log drivers (json-file, syslog, journald) write log data to kernel buffers. If the logging backend can't consume logs fast enough, kernel buffers fill up. Backpressure propagates to the container's write() calls — the app blocks on logging. In extreme cases this stalls the entire container, making it appear hung.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ