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Load test scenarios

Requirements

  • Two API services hosted on Azure app services
  • Main Api send a request to Node Api by HTTP or GRPC
  • Node API has data processing simulation what makes delay 100-120 ms
  • Verify throughput of server-to-server communication using HTTP/GRPC protocol
  • Count requests where response time less then 1 sec
  • Test runs using NBomber from local computer.

Environment

Conditions

  • Infrastructure hosted in West Europe
  • Performance test runner machine located in West Europe: i7 11th Generation (2.8 GHz) / 16 GB RAM / Windows 11 OS
  • Internet speed 100MB

Azure infrastructure

 az deployment sub create -l westeurope -f ./wnd-vnet/main.bicep --parameters './parameters.prod.json'
 az deployment sub create -l westeurope -f ./lnx-vnet/main.bicep --parameters './parameters.prod.json'

image

Feature URL Kind Azure service plan Third party Comment
Main API perf-main-api Api app service P1V3: 1 instance
Node HTTP API perf-http-node-api Api App P1V3: 1 instance
Node GRPC API perf-grpc-node-api Api App P1V3: 1 instance

App service plan

App service plan Core Ram Storage
Windows P1V3 2 8 GB 250 GB
Linux P1V3 2 8 GB 250 GB

App service windows/linux

Key Value Comment
HTTP version 2 wnd/lnx
Always on ON wnd/lnx
ARR Afinity OFF wnd/lnx
HTTPS Only ON wnd/lnx
HTTP proxy 2 ON lnx GRPC

Results

Simulation Duration
Ramp up traffic 30 seconds
Duration 2 minutes
Time out 1 seconds

Case 1: Run Asp.Net 7 API application on windows app services connected with vnet using HTTP contract

During run simulate 600 request per second

image More reports in WndVnetHttpNet7

Case 2: Run Asp.Net 7 API application on linux app services connected in vnet using HTTP contract

During run simulate 500 request per second

image More reports in LnxVnetHttpNet7

Case 3: Run Asp.Net 7 API application on linux app services connected in vnet using GRPC contract

During run simulate 800 request per second

image More reports in LnxVnetGrpcNet7

Summary

It was suprise for me but looks like windows app service plans on NET 7 could handle 600 RPS what is 100 RPS greater then on linux app service plan (Linux API throughput 500 RPS) GRPC could be use only on linux app service plan and it was easier to run it with NET 7 but not on NET 6 GRPC could handle 800 RPS what is 36% greater then HTTP on linux