AWS Lambda Integration with Amazon DynamoDB Streams

Last updated on May 3, 2021

Amazon DynamoDB is integrated with AWS Lambda so that you can create triggers, which are pieces of code that automatically respond to events in DynamoDB Streams. With triggers, you can build applications that react to data modifications in DynamoDB tables.

After you enable DynamoDB Streams on a table, associate the DynamoDB table with a Lambda function. AWS Lambda polls the stream and invokes your Lambda function synchronously when it detects new stream records.

Configure the StreamSpecification you want for your DynamoDB Streams:
- StreamEnabled (Boolean) – indicates whether DynamoDB Streams is enabled (true) or disabled (false) on the table.
- StreamViewType (string) – when an item in the table is modified, StreamViewType determines what information is written to the stream for this table. Valid values for StreamViewType are:
  - KEYS_ONLY – Only the key attributes of the modified items are written to the stream.
  - NEW_IMAGE – The entire item, as it appears after it was modified, is written to the stream.
  - OLD_IMAGE – The entire item, as it appeared before it was modified, is written to the stream.
  - NEW_AND_OLD_IMAGES – Both the new and the old item images of the items are written to the stream.

Sources:

https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Streams.Lambda.html
https://docs.aws.amazon.com/amazondynamodb/latest/APIReference/API_StreamSpecification.html

Written by: Jon Bonso

Jon Bonso is the co-founder of Tutorials Dojo, an EdTech startup and an AWS Digital Training Partner that provides high-quality educational materials in the cloud computing space. He graduated from Mapúa Institute of Technology in 2007 with a bachelor's degree in Information Technology. Jon holds 10 AWS Certifications and is also an active AWS Community Builder since 2020.

AWS, Azure, and GCP Certifications are consistently among the top-paying IT certifications in the world, considering that most companies have now shifted to the cloud. Earn over $150,000 per year with an AWS, Azure, or GCP certification!

Follow us on LinkedIn, YouTube, Facebook, or join our Slack study group. More importantly, answer as many practice exams as you can to help increase your chances of passing your certification exams on your first try!

View Our AWS, Azure, and GCP Exam Reviewers Check out our FREE courses

Our Community

~98%

passing rate

Around 95-98% of our students pass the AWS Certification exams after training with our courses.

200k+

students

Over 200k enrollees choose Tutorials Dojo in preparing for their AWS Certification exams.

~4.8

ratings

Our courses are highly rated by our enrollees from all over the world.

What our students say about us?

I’m deeply impressed by the quality of the practice tests from Tutorial Dojo. They are extremely well-written, clean and on-par with the real exam questions. Their practice tests and cheat sheets were a huge help for me to achieve 958 / 1000 — 95.8 % on my first try for the AWS Certified Solution Architect Associate exam. Perfect 10/10 material. The best $14 I’ve ever spent!

S. M. Shoaib

Khulna, Bangladesh

Given the enormous number of students and therefore the business success of Jon's courses, I was pleasantly surprised to see that Jon personally responds to many, including often the more technical questions from his students within the forums, showing that when Jon states that teaching is his true passion, he walks, not just talks the talk. I much respect and thank Jon Bonso.

Rowan Williams

Brisbane, Australia

The explanation to the questions are awesome. Lots of gap exposed in my learning. I used the practice tests along with the TD cheat sheets as my main study materials. This is a must training resource for the exam.

Using the practice exam helped me to pass. I think I wouldn't have passed if not for Jon's practice sets.

Jessica Chen

Guangzhou, China

I can say that Tutorials Dojo is a leading and prime resource when it comes to the AWS Certification Practice Tests. I also tried other courses but only Tutorials Dojo was able to give me enough knowledge of Amazon Web Services. My favorite part of this course is explaining the correct and wrong answers as it provides a deep understanding in AWS Cloud Platform. The course I purchased at Tutorials Dojo has been a weapon for me to pass the AWS Certified Solutions Architect - Associate exam and to compete in Cloud World. A Big thank you to Team Tutorials Dojo and Jon Bonso for providing the best practice test around the globe!!!

I highly recommend Jon and Tutorials Dojo!!!