Quota for Calendar API v3 now 10 times higher
Blog post from Google Cloud
In December 2014, Google announced a significant increase in the default quota for the Calendar API v3, raising it by a factor of ten to allow 1 million requests per day, thereby enabling applications to support more users without needing additional quota approvals. Developers can request even more free quota through the developer console if necessary. Google has streamlined the quota handling process to speed up allocation and provided several tips for efficient quota usage, such as using push notifications over polling, employing incremental synchronization with sync tokens, increasing page size with the maxResults parameter, updating events selectively, and applying exponential backoff for error retries to enhance performance and resource management.