Read replicas are copies of the main database that can only handle "read" requests (SELECT), freeing up the main "Primary" database to handle "writes" (INSERT/UPDATE).
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How do read replicas speed up help centers?
Help centers are "Read-Heavy" (thousands of people viewing articles, very few editing them). By pointing all article views to a set of read replicas, the main database stays fast for the actual support agents who need to write tickets.
Knowledge Challenge
Mastered Read Replicas vs. Write Replicas? Now try to guess the related 6-letter word!
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