Answer
Registry communication involves multiple API calls and digest checks causing high latency.
Quick Answer
Docker push/pull transfers individual layer tarballs sequentially or in small batches. Network round-trips for manifest lookups, layer existence checks (HEAD requests), and actual data transfer all add up. Even a 50MB layer takes multiple round-trips. Content-delivery networks and regional registry mirrors cut pull times significantly.
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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