January 2019
Intermediate to advanced
490 pages
15h 37m
English
Content preview from Serverless Programming Cookbook
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DynamoDB also supports writing items in a batch using the batch-write-item command action.
batch-write-item has the following characteristics:
- Can write to one or more tables.
- Can write up to 25 items. If we try to write more than 25 items, the whole set will fail.
- Maximum request size is 16 MB.
- Any unprocessed items are returned.
- From a capacity unit calculation perspective, each item is treated separately. For example, if I have two items of 6 KB each, both items will take two units, making a total of four capacity units. See the throughput provisioning recipe for more clarity on throughput calculations.
- The batch-write-item can be used for put or delete. You cannot do put and delete for the same item.
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