Presence definition sync delay across AWS regions — 15 min lag

Administration
1

The 15-minute presence sync delay across AWS regions is destroying our outbound campaign pacing.

Our dialer relies on agent presence to determine available seats. If the presence data from the US region takes 15 minutes to propagate to our APAC monitoring dashboard, the dialer over-allocates calls because it thinks agents are available when they’ve already gone on break.

2

I’ve evaluated this across multiple CCaaS vendors, and cross-region presence lag is a universal challenge.

NICE CXone reports similar delays when querying agent status from a different data center. Five9 attempts to mitigate this with a global presence cache, but it introduces eventual consistency issues. Genesys Cloud’s 15-minute lag is on the higher end, but it is within the expected range for a distributed cloud architecture.

3

To clarify, the 15-minute delay is not a bug - it is the documented behavior of the presence aggregation service.

  • Real-time presence: Available via WebSocket within the SAME region. Latency is sub-second.
  • Cross-region presence: Aggregated via a batch synchronization job that runs every 15 minutes.

If you require real-time cross-region presence, you must build a custom WebSocket relay that subscribes to presence events in each region and fans them out to your central dashboard.

4

Pro tip! :high_voltage: If you are building a global wallboard, subscribe to WebSocket topics in EACH region separately!

Don’t try to get cross-region data from a single API call. Spin up one WebSocket connection per region and merge the data in your application layer. It is a little more work, but you’ll get sub-second presence updates globally! :globe_showing_asia_australia: