feat(backend): ww performance create quote metrics

[BlairCurrey]

Running 5 VUs for 2 minutes

VUs: 5
Durations: 120s
Iterations: 3113 25.914919/s
p(90)=225.94ms

data_received..................: 3.2 MB 27 kB/s
     data_sent......................: 5.4 MB 45 kB/s
     http_req_blocked...............: avg=1.88µs   min=458ns  med=1.66µs   max=427.2µs  p(90)=2.29µs   p(95)=2.54µs  
     http_req_connecting............: avg=44ns     min=0s     med=0s       max=154.25µs p(90)=0s       p(95)=0s      
     http_req_duration..............: avg=64.23ms  min=5.67ms med=52.18ms  max=2.15s    p(90)=111.75ms p(95)=120.94ms
       { expected_response:true }...: avg=64.23ms  min=5.67ms med=52.18ms  max=2.15s    p(90)=111.75ms p(95)=120.94ms
     http_req_failed................: 0.00%  ✓ 0         ✗ 9334
     http_req_receiving.............: avg=40.17µs  min=7.04µs med=39.87µs  max=638.37µs p(90)=54.69µs  p(95)=59.47µs 
     http_req_sending...............: avg=10.64µs  min=2.54µs med=9.29µs   max=1.66ms   p(90)=12.7µs   p(95)=14.2µs  
     http_req_tls_handshaking.......: avg=0s       min=0s     med=0s       max=0s       p(90)=0s       p(95)=0s      
     http_req_waiting...............: avg=64.18ms  min=5.59ms med=52.12ms  max=2.15s    p(90)=111.7ms  p(95)=120.89ms
     http_reqs......................: 9334   77.703135/s
     iteration_duration.............: avg=192.79ms min=6.29ms med=188.46ms max=2.29s    p(90)=225.94ms p(95)=243.42ms
     iterations.....................: 3113   25.914919/s
     vus............................: 5      min=5       max=5 
     vus_max........................: 5      min=5       max=5 


running (2m00.1s), 0/5 VUs, 3113 complete and 0 interrupted iterations
default ✓ [ 100% ] 5 VUs  2m0s

This is a point where performance is starting to degrade but isn’t outright failing.

I am going into the highest duration resolver (createQuoteMutation) and finding the largest span and adding more metrics. This has shown the quote service’s paymentMethodHandlerService.getQuote call is taking the most time (blue on left - green is entire quote create). paymentMethod.startQuote call is taking the most time, and in getQuote (blue from the right image, green is the total for getQuote.