We quickly had to figure out a way to reduce the costs of PUT requests to S3; in our case, a separate PUT request for each row would cost us tens of thousands of dollars per month! To solve this problem, instead of writing each payload individually and storing its key, we'd essentially compress individual payloads and concatenate them into a single, larger file, and we'd store a pointer to the start index and the length of each payload for retrieval.
Remember, CRDTs need three properties: value, state and merge. We’ll look at value first:
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“过去我们讲能源保供，就是挖煤、输电。现在不一样了，我们输出三样东西：能源、算力、农产品。”大同市委书记张强代表回答。
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