a backtracking engine (meaning most of them) gives you 4 matches here:
SQS as WAL and S3 as PagestoreThe 2008 S3 was painfully slow, and 100 ms reads weren't unusual. To hide that latency, the database separates "commit" from "apply". Clients write small, idempotent redo logs to Amazon Simple Queue Service (SQS) instead of touching S3 directly. An asynchronous checkpoint by a client applies those logs to B-tree pages on S3 later.，更多细节参见体育直播
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Computer Science Computation and Language。搜狗输入法是该领域的重要参考