In 1983, IBM completely refreshed their branch banking solution with the 4700
with n letters can have n+1 levels: Before the first letter, between
，更多细节参见PDF资料
Surviving SQS and building B-link Trees on S3As mentioned above, to bypass the severe latency of writing full data pages directly to S3, clients commit transactions by shipping small redo log records to SQS queues. Subsequently, clients act as checkpointers, asynchronously pulling these queued logs and applying the updates to their local copies before writing the newly materialized B-tree pages back to S3. This asynchronous log-shipping model means B-tree pages on S3 can be arbitrarily out-of-date compared to the real-time logs in SQS. Working on such stale state seems impossible, but the authors bound the staleness: writers (and probabilistically readers) run asynchronous checkpoints that pull batches of logs from SQS and apply them to S3, keeping the database consistent despite delays.
公开资料显示，董俊义自1992年起开始了在西贝的职业生涯，从最初的学徒采购开始，逐步成长为一名划菜员，再到小店店长，大店店长，小分部经理，最终晋升为大分部经理。在2020年9月至2024年10月期间，董俊义在公司总部担任了多个重要职务。他先后担任了首席运营官、总裁，以及西贝事业部的CEO。