chore: added mongoose example app (#362)

Author: bizob2828

mongoose/README.md

@@ -0,0 +1,20 @@
+# Mongoose App
+
+This application demonstrates mongoose with the Node.js agent.
+
+## Setup
+```sh
+docker compose up -d
+npm install
+# Seed some data
+npm run seed
+
+cp env.sample .env
+# Fill out out `NEW_RELIC_LICENSE_KEY` with your ingest key
+npm start
+```
+
+## Make requests
+```sh
+curl http://localhost:3000/mongoose
+```

mongoose/constants.js

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+/*
+ * Copyright 2026 New Relic Corporation. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+const CONN_STRING = 'mongodb://localhost:27019'
+
+module.exports = {
+  CONN_STRING
+}

mongoose/docker-compose.yml

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+services:
+  mongodb:
+    container_name: nr_test_mongodb
+    image: library/mongo:5
+    ports:
+      - "27019:27017"
+    healthcheck:
+      test: ["CMD", "mongo", "--quiet"]
+      interval: 1s
+      timeout: 10s
+      retries: 30
+

mongoose/env.sample

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+NEW_RELIC_LICENSE_KEY=<your-license-key>
+NEW_RELIC_APP_NAME=mongoose-example-app
+# Uncomment for NR employees 
+#NEW_RELIC_HOST=staging-collector.newrelic.com

mongoose/index.js

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+/*
+ * Copyright 2026 New Relic Corporation. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+const fastify = require('fastify')({ logger: true })
+const { PORT: port = 3000, HOST: host = '127.0.0.1' } = process.env
+const model = require('./model')
+const mongoose = require('mongoose')
+const { CONN_STRING } = require('./constants')
+
+fastify.listen({ host, port }, function (err, address) {
+  if (err) {
+    fastify.log.error(err)
+    process.exit(1)
+  }
+})
+
+fastify.get('/mongoose', async (request, reply) => {
+  await mongoose.connect(CONN_STRING)
+  const data = await model.find({})
+  const names = data.map((datum) => `${datum.author} ${datum.title}`)
+  return reply.send({ names })
+})

mongoose/model.js

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+/*
+ * Copyright 2026 New Relic Corporation. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+const mongoose = require('mongoose')
+const { Schema } = mongoose
+const blogSchema = new Schema({
+  title: String, // String is shorthand for {type: String}
+  author: String,
+  body: String,
+  comments: [{ body: String, date: Date }],
+  date: { type: Date, default: Date.now },
+  hidden: Boolean,
+  meta: {
+    votes: Number,
+    favs: Number
+  }
+})
+const model = mongoose.model('Blog', blogSchema)
+
+module.exports = model

mongoose/package.json

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+{
+  "name": "mongoose-app",
+  "version": "1.0.0",
+  "description": "",
+  "license": "ISC",
+  "author": "",
+  "type": "commonjs",
+  "main": "index.js",
+  "scripts": {
+    "seed": "node seed.js",
+    "start": "node --env-file .env -r newrelic index.js",
+    "start:debug": "node --inspect-brk --env-file .env -r newrelic index.js",
+    "start:no-agent": "node index.js"
+  },
+  "dependencies": {
+    "@faker-js/faker": "^10.2.0",
+    "fastify": "^5.7.4",
+    "mongoose": "^9.1.5",
+    "newrelic": "^13.12.0"
+  }
+}

mongoose/seed.js

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+/*
+ * Copyright 2026 New Relic Corporation. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+const model = require('./model')
+const mongoose = require('mongoose')
+const { CONN_STRING } = require('./constants')
+const { faker } = require('@faker-js/faker')
+
+async function main() {
+  const promises = []
+  await mongoose.connect(CONN_STRING)
+  for (let i = 0; i < 100; i++) {
+    const prom = model.create({
+      title: faker.book.title(),
+      author: faker.person.firstName() + ' ' + faker.person.lastName(),
+      body: faker.lorem.paragraphs(5),
+      comments: [{ body: faker.lorem.sentence(), date: Date.now() }],
+      hidden: false,
+      meta: {
+        votes: 1,
+        favs: 1
+      }
+    })
+    promises.push(prom)
+  }
+  await Promise.all(promises)
+  console.log('done seeding db')
+  process.exit(0)
+}
+
+main()