Scenario
Round-trip latencies for chained requests /status and /block?height= with start-to-start throttling of (at least) 1100 ms for every request.
Also, latest block-height consistency with block availability and block age. The block propagation comparison is conservative and latency-agnostic.
Of the possible 31 regions, 2 were selected for data collection: Columbus, OH and Frankfurt.
Each location probe breaks its processing loop if / when the endpoint response is too-many-requests, a.k.a. HTTP code 429 etc. Also, codes 401 and 403.
At the time of the report generation: 4 of 4 datasets were available from 2 selected regions x 2 endpoints.
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Findings
| Endpoint | Lagging | Unique | Lowest | Arrival Tms | Arrival Region | Highest | Arrival Tms | Arrival Region |
|---|---|---|---|---|---|---|---|---|
| A. atomone-rpc.Publicnode.com | 1 | 6 | 8,504,296 | 1,778,625,595,938 | Frankfurt / AWS | 8,504,301 | 1,778,625,620,263 | Frankfurt / AWS |
| B. atomone.api.Pocket.network | 0 | 6 | 8,504,296 | 1,778,625,595,971 | Frankfurt / AWS | 8,504,301 | 1,778,625,620,323 | Columbus, OH / AWS |
We detected 1 response whose sendTms, arrivalTms and number was such that we can state the endpoint was lagging in the respective region.
E.g. on arrivalTms=1,778,625,610,295 in Frankfurt / AWS, we received number 8,504,299 from B. atomone.api.Pocket.network. Afterwards, on sendTms=1,778,625,610,335 we dispatched a request to A. atomone-rpc.Publicnode.com, which returned lower number 8,504,298 at arrivalTms=1,778,625,610,523. Therefore, A. atomone-rpc.Publicnode.com was lagging because it was returning lower number 8,504,298 well after B. atomone.api.Pocket.network advanced to 8,504,299.
Details
Latencies exclude one warmup request per endpoint in each region. Additional columns are visible when you scroll to the right.