HOW WE REDUCED OUR DOCUMENTDB COST BY NEARLY 50% AND OPTIMIZED PERFORMANCE

Summary from the TLDR Web Dev newsletter

The activity feed team at Postman investigated their DocumentDB usage and was able to reduce the monthly cost from $6k to $3k with 50% performance gains. They optimized their feed collation query, refined their indexing strategy, shifted from TTL-based deletes to direct deletes, and updated their collation strategy to use updates instead of inserts and deletes. These changes led to significant reductions in both read and write I/O operations and a 35% reduction in CPU utilization.