How much data can DynamoDB handle?
The maximum size of a DynamoDB item is 400KB. From the Limits in DynamoDB documentation: The maximum item size in DynamoDB is 400 KB, which includes both attribute name binary length (UTF-8 length) and attribute value lengths (again binary length). The attribute name counts towards the size limit.
How many items can DynamoDB store?
DynamoDB transactional API operations have the following constraints: A transaction cannot contain more than 25 unique items. A transaction cannot contain more than 4 MB of data.
Is DynamoDB unlimited?
Fast, flexible NoSQL database service for single-digit millisecond performance at any scale. Deliver apps with consistent single-digit millisecond performance, nearly unlimited throughput and storage, and automatic multi-region replication.
How many records can DynamoDB hold?
You can use up to 3,000 Read Capacity Units (RCUs) and up to 1,000 Write Capacity Units (WCUs) on a single partition per second. Note — this is a lot of capacity! This would allow you to read 12MB of strongly-consistent data or 24MB of eventually-consistent data per second, as well as to write 1MB of data per second.
What is DynamoDB write capacity?
One write capacity unit represents one write per second for an item up to 1 KB in size. If you need to write an item that is larger than 1 KB, DynamoDB must consume additional write capacity units. Transactional write requests require 2 write capacity units to perform one write per second for items up to 1 KB.
How can you increase your DynamoDB table limit in a region?
The DynamoDB doc says that the per account limit on the number of tables is 256 per region but can be increased by calling AWS support.
How many secondary indexes are allowed per table?
For maximum query flexibility, you can create up to 20 global secondary indexes (default quota) and up to 5 local secondary indexes per table.
Why is DynamoDB bad?
It’s possible to create a table with only a few clicks. There are no relations and no schema in DynamoDB in contradistinction to traditional relational databases. To create a table it’s required to choose only a name for it and fill out a hash and optional range key fields.
Why you should not use DynamoDB?
When not to use DynamoDB: When multi-item or cross table transactions are required. When complex queries and joins are required. When real-time analytics on historic data is required.
How does DynamoDB calculate capacity units?
1 read capacity unit (RCU) = 1 strongly consistent read of up to 4 KB/s = 2 eventually consistent reads of up to 4 KB/s per read. 2 RCUs = 1 transactional read request (one read per second) for items up to 4 KB. For reads on items greater than 4 KB, total number of reads required = (total item size / 4 KB) rounded up.
How do I increase DynamoDB write capacity units?
With DynamoDB auto scaling, a table or a global secondary index can increase its provisioned read and write capacity to handle sudden increases in traffic, without request throttling. When the workload decreases, DynamoDB auto scaling can decrease the throughput so that you don’t pay for unused provisioned capacity.
What are the per table and per account limits of your DynamoDB account?