nix: increase jwt-hs loadtest TOTAL_TARGETS

This is so the process monitoring results are more meaningful.

* remove the amount of total targets from the loadtest kind name
  since the targets can change.

* clarifies the top comment on the generate_targets python script

* increase TOTAL_TARGETS on jwt-hs loadtest

.github/workflows/test.yaml

@@ -113,7 +113,7 @@ jobs:
   loadtest:
     strategy:
       matrix:
-        kind: ['mixed', 'jwt-hs-50k', 'jwt-rsa-1k']
+        kind: ['mixed', 'jwt-hs', 'jwt-rsa']
     name: Loadtest
     runs-on: ubuntu-24.04
     steps:

nix/tools/generate_targets.py

@@ -1,4 +1,14 @@
 # generates a file to be used by the vegeta load testing tool
+# it generates TOTAL_TARGETS amount of requests that will be run
+
+# This is a worst case scenario for the JWT cache:
+# - all requests will have a unique JWT so no cache hits
+# - all jwts have an expiration that will be long enough to be
+#   valid at time of request but short enough that already
+#   validated jwts will expire later during the loadtest run
+# - the above guarantees JWT cache purging will happen
+#
+# We want this to track resource consumption in the worst case
 import time
 import hmac
 import hashlib
@@ -10,7 +20,7 @@ import random
 
 SECRET = b"reallyreallyreallyreallyverysafe"
 URL = "http://postgrest"
-TOTAL_TARGETS = 50000  # tuned by hand to reduce result variance
+TOTAL_TARGETS = 200000  # tuned by hand to reduce result variance
 
 
 def base64url_encode(data: bytes) -> str:

nix/tools/loadtest.nix

@@ -43,7 +43,7 @@ let
           "ARG_OPTIONAL_SINGLE([testdir], [t], [Directory to load tests and fixtures from], [./test/load])"
           "ARG_OPTIONAL_SINGLE([kind], [k], [Kind of loadtest], [mixed])"
           "ARG_OPTIONAL_SINGLE([jwtcache], [], [JWT Cache on/off], [on])"
-          "ARG_TYPE_GROUP_SET([KIND], [KIND], [kind], [mixed,jwt-hs-50k,jwt-rsa-1k])"
+          "ARG_TYPE_GROUP_SET([KIND], [KIND], [kind], [mixed,jwt-hs,jwt-rsa])"
           "ARG_TYPE_GROUP_SET([JWTCACHE], [JWTCACHE], [jwtcache], [on,off])"
           "ARG_LEFTOVERS([additional vegeta arguments])"
         ];
@@ -66,7 +66,7 @@ let
         abs_output="$(realpath "$_arg_output")"
 
         case "$_arg_kind" in
-          jwt-hs-50k)
+          jwt-hs)
 
             ${genTargets ./generate_targets.py} "$_arg_testdir"/gen_targets.http
 
@@ -81,7 +81,7 @@ let
             ${runner} -lazy -targets gen_targets.http -output \"$abs_output\" \"''${_arg_leftovers[@]}\""
             ;;
 
-          jwt-rsa-1k)
+          jwt-rsa)
 
             ${genTargets ./generate_targets_rsa.py} "$_arg_testdir"/gen_targets.http "$_arg_testdir"/gen_jwk.http