us-east-2 (Ohio) -- > us-east-1 (N. Virginia) ~10ms #78
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eguzki
changed the title
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@alexsnaps interesting to note that ping is about 10ms (done with This is maybe because we are doing two RTT (one for read counters, other for writting)?? |
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Noting also that this setup is unconventional, we then might want to run the same test when we have setup using Transit Gateways |
Yes... there are multiple roundtrips to Redis... added to that, there is the work redis has to do, encoding/decoding the requests, serializing/deserializing the payloads... I get it that the latter are CPU bound and not necessarily affected by the network... tho we are still not as lightweight as a
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Adding this new test for the record: 3 limts ---
- namespace: test_namespace
max_value: 100000
seconds: 5
conditions:
variables:
- namespace: test_namespace
max_value: 100000
seconds: 4
conditions:
variables:
- namespace: test_namespace
max_value: 100000
seconds: 3
conditions:
variables:When there is 1 limit, limitador needs 1 RTT to get all the counter values and 1 RTT to increment. Total 2*RTT. When there are 3 limit, limitador needs 1 RTT to get all the counter values and 3 RTT to increment them. Total 4*RTT. Result The latency is x2 as expected |
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Adding this new test for the record: redis cache with defaults Latency is 1 RTT (10ms ping) |
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Adding this new test for the record: redis cache with Latency is 0 RTT (jitter 1RTT for read and 2 RTT for read+write) |
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Adding this new test for the record: I do not notice any difference regarding the first test without the rate limit response headers |
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Test setup
Redis proxy
1 EC2 instance
us-east-1 (N. Virginia)
AZ: us-east-1a
amazon linux 2023 AMI
type: c7i.large 2vCPU 4Gib Memory
Elasticache
Limtador and Driver
1 EC2 instance
eu-east-2 (Ohio)
AZ: eu-north-1c
amazon linux 2023 AMI
type: c7i xlarge 4vCPU 8Gib Memory
sudo yum update -y sudo yum install -y docker sudo service docker start sudo usermod -a -G docker ec2-user # (logout and login again) docker psLimits designed to never hit the threshold, so all requests increment the counter.
Results
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