[Ref] Azure Function host.json

AzureFunctionHost.json

// https://learn.microsoft.com/en-us/azure/azure-functions/functions-host-json
{
    "version": "2.0",
    // Specifies how many function invocations are aggregated when calculating metrics for Application Insights.
    "aggregator": {
        "batchSize": 1000,
        "flushTimeout": "00:00:30"
    },
    "concurrency": {
        "dynamicConcurrencyEnabled": true,
        "snapshotPersistenceEnabled": true
    },
    "extensions": {
        "eventHubs": {
            "maxEventBatchSize": 10,
            "targetUnprocessedEventThreshold": 75,
            "batchCheckpointFrequency": 1,
            "prefetchCount": 300,
            "transportType": "amqpWebSockets",
            "webProxy": "https://proxyserver:8080",
            "customEndpointAddress": "amqps://company.gateway.local",
            "initialOffsetOptions": {
                "type": "fromStart",
                "enqueuedTimeUtc": ""
            },
            "clientRetryOptions": {
                "mode": "exponential",
                "tryTimeout": "00:01:00",
                "delay": "00:00:00.80",
                "maximumDelay": "00:01:00",
                "maximumRetries": 3
            }
        },
        "durableTask": {
            "hubName": "MyTaskHub",
            "storageProvider": {
                "connectionStringName": "AzureWebJobsStorage",
                "controlQueueBatchSize": 32,
                "controlQueueBufferThreshold": 256,
                "controlQueueVisibilityTimeout": "00:05:00",
                "maxQueuePollingInterval": "00:00:30",
                "partitionCount": 4,
                "trackingStoreConnectionStringName": "TrackingStorage",
                "trackingStoreNamePrefix": "DurableTask",
                "useLegacyPartitionManagement": true,
                "workItemQueueVisibilityTimeout": "00:05:00",
            },
            "tracing": {
                "traceInputsAndOutputs": false,
                "traceReplayEvents": false,
            },
            "notifications": {
                "eventGrid": {
                    "topicEndpoint": "https://topic_name.westus2-1.eventgrid.azure.net/api/events",
                    "keySettingName": "EventGridKey",
                    "publishRetryCount": 3,
                    "publishRetryInterval": "00:00:30",
                    "publishEventTypes": [
                        "Started",
                        "Pending",
                        "Failed",
                        "Terminated"
                    ]
                }
            },
            "maxConcurrentActivityFunctions": 10,
            "maxConcurrentOrchestratorFunctions": 10,
            "extendedSessionsEnabled": false,
            "extendedSessionIdleTimeoutInSeconds": 30,
            "useAppLease": true,
            "useGracefulShutdown": false,
            "maxEntityOperationBatchSize": 50
        },
        "cosmosDB": {
            "connectionMode": "Gateway",
            "protocol": "Https",
            "leaseOptions": {
                "leasePrefix": "prefix1"
            }
        },
        "blobs": {},
        "http": {},
        "queues": {},
        "sendGrid": {},
        "serviceBus": {}
    },
    "extensionBundle": {
        "id": "Microsoft.Azure.Functions.ExtensionBundle",
        "version": "[1.*, 2.0.0)"
    },
    "functions": [
        "QueueProcessor",
        "GitHubWebHook"
    ],
    "functionTimeout": "00:05:00",
    "healthMonitor": {
        "enabled": true,
        "healthCheckInterval": "00:00:10",
        "healthCheckWindow": "00:02:00",
        "healthCheckThreshold": 6,
        "counterThreshold": 0.80
    },
    "logging": {
        "fileLoggingMode": "debugOnly",
        "logLevel": {
            "Function.MyFunction": "Information",
            "default": "None"
        },
        "applicationInsights": {
            "samplingSettings": {
                "isEnabled": true,
                "maxTelemetryItemsPerSecond": 20,
                "evaluationInterval": "01:00:00",
                "initialSamplingPercentage": 100.0,
                "samplingPercentageIncreaseTimeout": "00:00:01",
                "samplingPercentageDecreaseTimeout": "00:00:01",
                "minSamplingPercentage": 0.1,
                "maxSamplingPercentage": 100.0,
                "movingAverageRatio": 1.0,
                "excludedTypes": "Dependency;Event",
                "includedTypes": "PageView;Trace"
            },
            "dependencyTrackingOptions": {
                "enableSqlCommandTextInstrumentation": true
            },
            "enableLiveMetrics": true,
            "enableDependencyTracking": true,
            "enablePerformanceCountersCollection": true,
            "httpAutoCollectionOptions": {
                "enableHttpTriggerExtendedInfoCollection": true,
                "enableW3CDistributedTracing": true,
                "enableResponseHeaderInjection": true
            },
            "snapshotConfiguration": {
                "agentEndpoint": null,
                "captureSnapshotMemoryWeight": 0.5,
                "failedRequestLimit": 3,
                "handleUntrackedExceptions": true,
                "isEnabled": true,
                "isEnabledInDeveloperMode": false,
                "isEnabledWhenProfiling": true,
                "isExceptionSnappointsEnabled": false,
                "isLowPrioritySnapshotUploader": true,
                "maximumCollectionPlanSize": 50,
                "maximumSnapshotsRequired": 3,
                "problemCounterResetInterval": "24:00:00",
                "provideAnonymousTelemetry": true,
                "reconnectInterval": "00:15:00",
                "shadowCopyFolder": null,
                "shareUploaderProcess": true,
                "snapshotInLowPriorityThread": true,
                "snapshotsPerDayLimit": 30,
                "snapshotsPerTenMinutesLimit": 1,
                "tempFolder": null,
                "thresholdForSnapshotting": 1,
                "uploaderProxy": null
            }
        }
    },
    "managedDependency": {
        "enabled": true
    },
    "singleton": {
        "lockPeriod": "00:00:15",
        "listenerLockPeriod": "00:01:00",
        "listenerLockRecoveryPollingInterval": "00:01:00",
        "lockAcquisitionTimeout": "00:01:00",
        "lockAcquisitionPollingInterval": "00:00:03"
    },
    "watchDirectories": [
        "Shared",
        "Test"
    ],
    "watchFiles": [
        "myFile.txt"
    ]
}