Meteor.js v3.0.3 is out! 🎉 - announce / releases - Meteor.js forums

Hello everyone, we are happy to announce that Meteor v3.0.3 is out! :tada: In this release, we focused on performance research to understand some of the isolated reports we received. @nachocodoner will soon share some of our findings and benchmarks in a post. From that research, we extracted a few potential actionable ideas to improve Meteor 3 performance: Implement batching Observer > DDP calls can greatly reduce the amount of async contexts (Async Local Storage) we spawn, thus relieving garbage collection. You can disable WebSocket message compression to get a significant boost in performance depending on your app behavior if it’s heavy on reactivity. We must move away from ALS in high-frequency hotspots and use it sparingly. We want to experiment with DDP batching in the next releases. If you have any feedback or ideas on it, let us know. We also have a few notes that we would like to share after investigating a few issues:.