Update load test to include GET option and update documentation.

Author: rhamlett_microsoft

src/PerfProblemSimulator/Controllers/LoadTestController.cs

@@ -203,6 +203,7 @@ public LoadTestController(
     /// <response code="200">Load test completed successfully with timing details.</response>
     /// <response code="500">Request exceeded 120s and random exception was triggered.</response>
     [HttpPost]
+    [HttpGet]
     [ProducesResponseType(typeof(LoadTestResult), StatusCodes.Status200OK)]
     [ProducesResponseType(typeof(ErrorResponse), StatusCodes.Status500InternalServerError)]
     public async Task<IActionResult> ExecuteLoadTest(

src/PerfProblemSimulator/wwwroot/azure-monitoring-guide.html

@@ -871,19 +871,42 @@ <h3>Load Test Endpoint</h3>
             <h3>Setting Up Azure Load Testing</h3>
             <ol>
                 <li>In the Azure Portal, create an <strong>Azure Load Testing</strong> resource</li>
-                <li>Create a new test and configure the target URL:
-                    <div class="code-block">
+                <li>Create a new test and configure the target URL using one of these options:</li>
+            </ol>
+
+            <h4>Option 1: GET with Query Parameters (Simplest)</h4>
+            <p>Use this for URL-based quick tests — no JMeter script required:</p>
+            <div class="code-block">
+<span class="comment"># With defaults</span>
+https://your-app.azurewebsites.net/api/loadtest/probe
+
+<span class="comment"># Faster degradation (recommended for testing)</span>
+https://your-app.azurewebsites.net/api/loadtest/probe?softLimit=25&amp;degradationFactor=10
+
+<span class="comment"># Aggressive timeout testing</span>
+https://your-app.azurewebsites.net/api/loadtest/probe?softLimit=10&amp;degradationFactor=50
+            </div>
+            <p><strong>Query Parameters:</strong></p>
+            <ul>
+                <li><code>workIterations</code> - CPU work iterations (default: 1000)</li>
+                <li><code>bufferSizeKb</code> - Memory buffer in KB (default: 5)</li>
+                <li><code>softLimit</code> - Concurrent requests before degradation (default: 50)</li>
+                <li><code>degradationFactor</code> - Delay ms per request over limit (default: 5)</li>
+            </ul>
+
+            <h4>Option 2: POST with JSON Body</h4>
+            <p>Use this when configuring a request body in Azure Load Testing or using a JMeter script:</p>
+            <div class="code-block">
 POST https://your-app.azurewebsites.net/api/loadtest
 Content-Type: application/json
 
 {
-  "workIterations": 1000,
-  "bufferSizeKb": 5,
-  "softLimit": 50,
-  "degradationFactor": 5
+  "softLimit": 25,
+  "degradationFactor": 10
 }
-                    </div>
-                </li>
+            </div>
+
+            <ol start="3">
                 <li>Configure load pattern (ramp up, steady state, ramp down)</li>
                 <li>Set up Azure Monitor integration to correlate metrics</li>
             </ol>

src/PerfProblemSimulator/wwwroot/documentation.html

@@ -879,8 +879,8 @@ <h3>Load Test Endpoint (Azure Load Testing)</h3>
                 <tbody>
                     <tr>
                         <td><code>/api/loadtest</code></td>
-                        <td><span class="method-badge method-post">POST</span></td>
-                        <td>Execute load test probe with JSON body</td>
+                        <td><span class="method-badge method-get">GET</span> <span class="method-badge method-post">POST</span></td>
+                        <td>Execute load test probe (GET uses defaults, POST accepts JSON body)</td>
                     </tr>
                     <tr>
                         <td><code>/api/loadtest/probe</code></td>
@@ -894,7 +894,22 @@ <h3>Load Test Endpoint (Azure Load Testing)</h3>
                     </tr>
                 </tbody>
             </table>
-            <p><strong>Request body (POST):</strong></p>
+
+            <h4>Option 1: GET with Query Parameters (Recommended for Azure Load Testing)</h4>
+            <p>Use for URL-based quick tests in Azure Load Testing:</p>
+            <div class="code-block">
+<span class="comment"># With defaults (~100ms response at low load)</span>
+GET /api/loadtest/probe
+
+<span class="comment"># Faster degradation (recommended for testing)</span>
+GET /api/loadtest/probe?softLimit=25&amp;degradationFactor=10
+
+<span class="comment"># Aggressive timeout testing</span>
+GET /api/loadtest/probe?softLimit=10&amp;degradationFactor=50
+            </div>
+
+            <h4>Option 2: POST with JSON Body</h4>
+            <p>Use when you need a JMeter script or want to send a request body:</p>
             <div class="code-block">
 {
   <span class="string">"workIterations"</span>: 1000,
@@ -1015,6 +1030,7 @@ <h2>📐 Architecture</h2>
 │   ├── <span class="file">CpuController.cs</span>
 │   ├── <span class="file">CrashController.cs</span>
 │   ├── <span class="file">HealthController.cs</span>
+│   ├── <span class="file">LoadTestController.cs</span>     <span class="comment"># Azure Load Testing endpoint</span>
 │   ├── <span class="file">MemoryController.cs</span>
 │   ├── <span class="file">MetricsController.cs</span>
 │   ├── <span class="file">SlowRequestController.cs</span>
@@ -1024,6 +1040,7 @@ <h2>📐 Architecture</h2>
 │   ├── <span class="file">CpuStressService.cs</span>
 │   ├── <span class="file">CrashService.cs</span>
 │   ├── <span class="file">LatencyProbeService.cs</span>
+│   ├── <span class="file">LoadTestService.cs</span>        <span class="comment"># Load test with soft limit degradation</span>
 │   ├── <span class="file">MemoryPressureService.cs</span>
 │   ├── <span class="file">MetricsBroadcastService.cs</span>
 │   ├── <span class="file">MetricsCollector.cs</span>
@@ -1032,6 +1049,7 @@ <h2>📐 Architecture</h2>
 │   ├── <span class="file">ThreadBlockService.cs</span>
 │   ├── <span class="file">ICpuStressService.cs</span>       <span class="comment"># Interfaces</span>
 │   ├── <span class="file">ICrashService.cs</span>
+│   ├── <span class="file">ILoadTestService.cs</span>
 │   ├── <span class="file">IMemoryPressureService.cs</span>
 │   ├── <span class="file">IMetricsCollector.cs</span>
 │   ├── <span class="file">ISlowRequestService.cs</span>
@@ -1047,6 +1065,8 @@ <h2>📐 Architecture</h2>
 │   ├── <span class="file">CrashRequest.cs</span>
 │   ├── <span class="file">DetailedMetrics.cs</span>
 │   ├── <span class="file">ErrorResponse.cs</span>
+│   ├── <span class="file">LoadTestRequest.cs</span>        <span class="comment"># Load test parameters</span>
+│   ├── <span class="file">LoadTestResult.cs</span>         <span class="comment"># Load test response</span>
 │   ├── <span class="file">MemoryAllocationRequest.cs</span>
 │   ├── <span class="file">MemoryReleaseResult.cs</span>
 │   ├── <span class="file">MetricsSnapshot.cs</span>