100K Unique Short Links in 1 Second: Concurrency and DynamoDB in Action

Explore a 20-minute AWS technical talk that demonstrates how to generate 100,000 unique short links in under 1 second without using queues. Discover the engineering behind an API endpoint that creates collision-free short-links for precise SMS campaign tracking. Learn how the team at Rebrandly combined Golang's concurrency capabilities with DynamoDB's transactional API to write directly to the database while avoiding performance bottlenecks and hot partitions. The presentation covers the architectural decisions, technical limitations, and optimization techniques that enabled a solution capable of handling up to 600 million links efficiently. Featuring insights from Rebrandly's DevOps Lead Gonzalo Rios, Senior VP of Engineering Alex Ischenko, and AWS Startup Solutions Architect Zac Burns, this session provides valuable knowledge for developers working with high-performance distributed systems.