Compare asynchronous read replicas with synchronous replicas for high availability and recovery.

Problem Statement

Explanation

Asynchronous replicas are great for read scale and reporting. They do not slow writes, but can lag. On failover you may lose recent commits equal to the lag. They suit relaxed RPO. Synchronous replicas acknowledge commits only after a replica confirms. This reduces or eliminates data loss at the cost of higher write latency and tighter coupling. Choose per workload, per region, and document expected RPO/RTO.

Code Solution

SolutionRead Only

-- Concept: sync commit waits for replica ACK; async returns after local log flush

Practice Sets

This question appears in the following practice sets:

Security, Backup & Recovery (DBA Essentials)

Next Question

Master Interviews
Anywhere, Anytime

Compare asynchronous read replicas with synchronous replicas for high availability and recovery.

Problem Statement

Explanation

Code Solution

Practice Sets

Related Questions

Which SQL statement retrieves all columns and rows from a table named employees?

Which clause filters rows before aggregation and affects which rows are grouped?

What is the default sort order when ORDER BY is used without ASC or DESC?

Which construct is commonly used to paginate results in SQL engines like Postgres and MySQL?

Which predicate correctly checks for missing values in standard SQL?

More from SQL & Databases

Master Interviews Anywhere, Anytime

Compare asynchronous read replicas with synchronous replicas for high availability and recovery.

Problem Statement

Explanation

Code Solution

Practice Sets

Related Questions

Which SQL statement retrieves all columns and rows from a table named employees?

Which clause filters rows before aggregation and affects which rows are grouped?

What is the default sort order when ORDER BY is used without ASC or DESC?

Which construct is commonly used to paginate results in SQL engines like Postgres and MySQL?

Which predicate correctly checks for missing values in standard SQL?

More from SQL & Databases

Master Interviews
Anywhere, Anytime