diff --git a/capitulo_5/5.9.1/test/handler.test.js b/capitulo_5/5.9.1/test/handler.test.js
index f4b9182..af5938e 100644
--- a/capitulo_5/5.9.1/test/handler.test.js
+++ b/capitulo_5/5.9.1/test/handler.test.js
@@ -13,7 +13,7 @@ const event = {
 it('#redirect', async () => {
     const result = await redirect(event)
     expect(result.statusCode).toBe(301)
-    expect(result.headers).toEqual({ Location: 'https://novatec.com.br/livros/nodejs-3ed/' })
+    expect(result.headers).toEqual({ Location: 'https://www.novatec.com.br/livros/nodejs-3ed/' })
     expect(typeof result.body).toBe('string')
 })
 it('#redirect link non existent', async () => {
diff --git a/capitulo_5/5.9.2/.nvmrc b/capitulo_5/5.9.2/.nvmrc
new file mode 100644
index 0000000..3c03207
--- /dev/null
+++ b/capitulo_5/5.9.2/.nvmrc
@@ -0,0 +1 @@
+18
diff --git a/capitulo_5/5.9.2/jest.config.js b/capitulo_5/5.9.2/jest.config.js
new file mode 100644
index 0000000..b9f744d
--- /dev/null
+++ b/capitulo_5/5.9.2/jest.config.js
@@ -0,0 +1,7 @@
+/** @type {import('jest').Config} */
+const config = {
+    testEnvironment: 'jest-environment-node',
+    verbose: true,
+    setupFiles: ['./test/setup.js']
+}
+module.exports = config
\ No newline at end of file
diff --git a/capitulo_5/5.9.2/package.json b/capitulo_5/5.9.2/package.json
new file mode 100644
index 0000000..46a599c
--- /dev/null
+++ b/capitulo_5/5.9.2/package.json
@@ -0,0 +1,28 @@
+{
+  "name": "5.9.1",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "start": "export DEBUG=wbruno:*; npx sls dynamodb install --stage local --region sa-east-1; npx sls offline start --stage local --region sa-east-1",
+    "test": "jest --coverage"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "@aws-sdk/client-dynamodb": "3.345.0",
+    "@aws-sdk/lib-dynamodb": "3.345.0",
+    "debug": "4.3.4",
+    "nanoid": "3.3.6"
+  },
+  "devDependencies": {
+    "aws-sdk-client-mock": "2.1.1",
+    "dotenv": "16.1.3",
+    "jest": "29.5.0",
+    "serverless": "3.32.2",
+    "serverless-domain-manager": "7.0.4",
+    "serverless-dynamodb-local": "0.2.40",
+    "serverless-offline": "12.0.4"
+  }
+}
diff --git a/capitulo_5/5.9.2/resources/db/shorts.json b/capitulo_5/5.9.2/resources/db/shorts.json
new file mode 100644
index 0000000..f7fc7fe
--- /dev/null
+++ b/capitulo_5/5.9.2/resources/db/shorts.json
@@ -0,0 +1,10 @@
+[
+    {
+      "id": "iNxun1bg5Y",
+      "link": "https://www.novatec.com.br/livros/nodejs-3ed/"
+    },
+    {
+      "id": "typescript",
+      "link": "https://www.novatec.com.br/livros/aprendendo-typescript/"
+    }
+]
\ No newline at end of file
diff --git a/capitulo_5/5.9.2/resources/serverless.local.yml b/capitulo_5/5.9.2/resources/serverless.local.yml
new file mode 100644
index 0000000..224ac09
--- /dev/null
+++ b/capitulo_5/5.9.2/resources/serverless.local.yml
@@ -0,0 +1,23 @@
+provider:
+  vpc:
+    securityGroupIds:
+      - sg-..
+    subnetIds:
+      - subnet-..
+  iam:
+    role:
+      name: serverless-${self:service}-${self:provider.stage}-role
+resources:
+  Resources: ${file(resources/table.yml)}
+apiGateway:
+  apiKeys:
+    - name: localKey
+      value: d41d8cd98f00b204e9800998ecf8427e
+custom:
+  customDomain:
+    domainName: localhost
+environment:
+  AWS_NODEJS_CONNECTION_REUSE_ENABLED: 1
+  AWS_REGION: sa-east-1
+  NODE_ENV: development
+  DYNAMODB_ENDPOINT: http://localhost:8000
\ No newline at end of file
diff --git a/capitulo_5/5.9.2/resources/table.yml b/capitulo_5/5.9.2/resources/table.yml
new file mode 100644
index 0000000..96e028c
--- /dev/null
+++ b/capitulo_5/5.9.2/resources/table.yml
@@ -0,0 +1,11 @@
+shortenerTable:
+  Type: AWS::DynamoDB::Table
+  Properties:
+    TableName: Shortener
+    AttributeDefinitions:
+      - AttributeName: id
+        AttributeType: S
+    KeySchema:
+      - AttributeName: id
+        KeyType: HASH
+    BillingMode: PAY_PER_REQUEST
\ No newline at end of file
diff --git a/capitulo_5/5.9.2/serverless.yml b/capitulo_5/5.9.2/serverless.yml
new file mode 100644
index 0000000..7dec814
--- /dev/null
+++ b/capitulo_5/5.9.2/serverless.yml
@@ -0,0 +1,116 @@
+service: shortener
+plugins:
+  - serverless-domain-manager
+  - serverless-dynamodb-local
+  - serverless-offline #needs to be last in the list
+useDotenv: true
+configValidationMode: warn
+package:
+  individually: false
+  excludeDevDependencies: true
+  patterns:
+    - node_modules/**
+    - src/**
+provider:
+  name: aws
+  architecture: arm64
+  region: ${opt:region}
+  stage: ${opt:stage}
+  runtime: nodejs18.x
+  versionFunctions: true
+  logRetentionInDays: 3
+  timeout: 30
+  stackName: serverless-${self:service}-${self:provider.stage}
+  memorySize: 128
+  tracing:
+    apiGateway: true
+  apiGateway:
+    apiKeys: ${file(./resources/serverless.${self:provider.stage}.yml):apiGateway.apiKeys, ''}
+    apiKeySourceType: HEADER
+    disableDefaultEndpoint: true
+  stackTags:
+    Name: ${self:service}
+  deploymentBucket:
+    name: algum-s3-${self:provider.stage}-deployment
+  environment: ${file(./resources/serverless.${self:provider.stage}.yml):environment}
+  iam: ${file(./resources/serverless.${self:provider.stage}.yml):provider.iam, ''}
+  logs:
+    restApi:
+      accessLogging: false
+      executionLogging: false
+functions:
+  redirect:
+    description: redirects hash to given url
+    handler: src/handler.redirect
+    events:
+      - http:
+          path: /{id}
+          method: get
+          cors: true
+          private: false
+  byId:
+    description: retrieve a shortened url by its id
+    handler: src/shortener.byId
+    events:
+      - http:
+          path: /shorts/{id}
+          method: get
+          cors: true
+          private: true
+  create:
+    description: create a new shortened url
+    handler: src/shortener.create
+    events:
+      - http:
+          path: /shorts
+          method: post
+          cors: true
+          private: true
+  list:
+    description: list all shortened urls
+    handler: src/shortener.list
+    events:
+      - http:
+          path: /shorts
+          method: get
+          cors: true
+          private: true
+  update:
+    description: update a new shortened url
+    handler: src/shortener.update
+    events:
+      - http:
+          path: /shorts/{id}
+          method: put
+          cors: true
+          private: true
+  remove:
+    description: remove a new shortened url
+    handler: src/shortener.remove
+    events:
+      - http:
+          path: /shorts/{id}
+          method: delete
+          cors: true
+          private: true
+resources: ${file(./resources/serverless.${self:provider.stage}.yml):resources, ''}
+custom:
+  dynamodb:
+    stages:
+      - local
+    start:
+      seed: true
+      migrate: true
+    seed:
+      domain:
+        sources:
+          - table: Shortener
+            sources: [./resources/db/shorts.json]
+  endpoints:
+    dynamodb-url: 'http://localhost:8000'
+  customDomain:
+    enabled: true
+    domainName: ${self:service}.${self:provider.stage}.seudominio.com.br
+    stage: ${self:provider.stage}
+    createRoute53Record: false
+    basePath: ''
\ No newline at end of file
diff --git a/capitulo_5/5.9.2/src/config/dynamodb.js b/capitulo_5/5.9.2/src/config/dynamodb.js
new file mode 100644
index 0000000..d1734b3
--- /dev/null
+++ b/capitulo_5/5.9.2/src/config/dynamodb.js
@@ -0,0 +1,15 @@
+const { DynamoDBClient } = require('@aws-sdk/client-dynamodb')
+const { DynamoDBDocumentClient } = require('@aws-sdk/lib-dynamodb')
+
+const marshallOptions = {
+  removeUndefinedValues: true
+}
+
+const localConfig = { endpoint: process.env.DYNAMODB_ENDPOINT }
+/* istanbul ignore next */
+const config = process.env.DYNAMODB_ENDPOINT ? localConfig : {}
+
+const dynamodb = new DynamoDBClient(config)
+const documentClient = DynamoDBDocumentClient.from(dynamodb, { marshallOptions })
+
+module.exports = { dynamodb, documentClient }
\ No newline at end of file
diff --git a/capitulo_5/5.9.2/src/handler.js b/capitulo_5/5.9.2/src/handler.js
new file mode 100644
index 0000000..aeba855
--- /dev/null
+++ b/capitulo_5/5.9.2/src/handler.js
@@ -0,0 +1,27 @@
+const html = `<html>
+<head><title>301 Moved Permanently</title></head>
+<body>
+<center><h1>301 Moved Permanently</h1></center>
+</body>
+</html>`
+const repository = require('./repository')
+const redirect = (event) => {
+    const params = event.pathParameters
+
+    return repository.byId(params.id)
+        .then(result => {
+            console.log({ result })
+            if (!result?.link) {
+                throw new Error('not found')
+            }
+            return result
+        })
+        .then(result => {
+            const headers = { Location: result.link }
+            return { statusCode: 301, headers, body: html }
+        })
+        .catch((err) => {
+          return { statusCode: 404, body: JSON.stringify(err) }
+        })
+}
+module.exports = { redirect }
\ No newline at end of file
diff --git a/capitulo_5/5.9.2/src/repository.js b/capitulo_5/5.9.2/src/repository.js
new file mode 100644
index 0000000..c7ba23b
--- /dev/null
+++ b/capitulo_5/5.9.2/src/repository.js
@@ -0,0 +1,74 @@
+const { ScanCommand, GetCommand, PutCommand, DeleteCommand } = require('@aws-sdk/lib-dynamodb')
+const debug = require('debug')('wbruno:repository')
+const { nanoid } = require('nanoid')
+const { documentClient } = require('./config/dynamodb')
+const getNextLink = (data) => {
+  if (data?.LastEvaluatedKey) {
+    const urlParams = qs.stringify(data.LastEvaluatedKey)
+    return {
+      rel: 'next',
+      href: `?${urlParams}`
+    }
+  }
+  return {}
+}
+const repository = {
+    DEFAULT_SIZE: '50',
+    TABLE_NAME: 'Shortener',
+
+    list(query, sizeParam) {
+        const size = parseInt(sizeParam || this.DEFAULT_SIZE, 10)
+    
+        const config = {
+          TableName: this.TABLE_NAME,
+          Limit: size
+        }
+    
+        if (Reflect.has(query, 'id')) {
+          config.ExclusiveStartKey = { id: query.id }
+        }
+        debug({ config })
+    
+        const params = new ScanCommand(config)
+        return documentClient.send(params).then((result) => {
+          return {
+            size,
+            links: [getNextLink(result)],
+            items: result.Items || []
+          }
+        })
+    },
+
+    byId(id) {
+        debug({ id })
+        const params = new GetCommand({
+            Key: { id },
+            TableName: this.TABLE_NAME
+        })
+        return documentClient.send(params).then((result) => result.Item)
+    },
+
+    put(data, existendId) {
+        const id = existendId || nanoid()
+        const params = new PutCommand({
+          TableName: this.TABLE_NAME,
+          Item: {
+            id,
+            ...data
+          },
+          ReturnValues: 'ALL_OLD'
+        })
+    
+        return documentClient.send(params)
+    },
+    
+    delete(id) {
+        const params = new DeleteCommand({
+          TableName: this.TABLE_NAME,
+          Key: { id }
+        })
+    
+        return documentClient.send(params).then((_) => ({}))
+    } 
+}
+module.exports = repository
\ No newline at end of file
diff --git a/capitulo_5/5.9.2/src/shortener.js b/capitulo_5/5.9.2/src/shortener.js
new file mode 100644
index 0000000..b408d69
--- /dev/null
+++ b/capitulo_5/5.9.2/src/shortener.js
@@ -0,0 +1,71 @@
+const debug = require('debug')('wbruno:shortener')
+const repository = require('./repository')
+
+const headers = {
+  'Access-Control-Allow-Origin': '*',
+  'Access-Control-Allow-Credentials': true
+}
+
+const list = (event) => {
+  const query = event.queryStringParameters || {}
+
+  return repository.list(query, query.size).then((result) => {
+    return { statusCode: 200, headers, body: JSON.stringify(result) }
+  })
+}
+
+const byId = (event) => {
+  const params = event.pathParameters
+
+  return repository
+    .byId(params.id)
+    .then((result) => {
+      if (!result?.link) {
+        throw new Error('not found')
+      }
+      return result
+    })
+    .then((result) => {
+      return { statusCode: 200, headers, body: JSON.stringify(result) }
+    })
+    .catch((err) => {
+      return { statusCode: 404, body: JSON.stringify(err) }
+    })
+}
+
+const create = (event) => {
+  const body = JSON.parse(event.body || '{}')
+
+  debug('create', body)
+
+  return repository.put(body).then((_) => {
+    const result = { message: 'created' }
+    return { statusCode: 201, headers, body: JSON.stringify(result) }
+  })
+}
+
+const update = (event) => {
+  const params = event.pathParameters
+  const body = JSON.parse(event.body || '{}')
+
+  debug('update', body)
+
+  return repository.put(body, params.id).then((_) => {
+    const result = { message: 'updated' }
+    return { statusCode: 200, headers, body: JSON.stringify(result) }
+  })
+}
+
+const remove = (event) => {
+  const params = event.pathParameters
+
+  debug('delete', params.id)
+
+  return repository.delete(params.id).then(() => {
+    return { statusCode: 200, headers, body: '' }
+  })
+}
+
+module.exports = {
+    list, byId, create, update, remove
+}
\ No newline at end of file
diff --git a/capitulo_5/5.9.2/test/handler.test.js b/capitulo_5/5.9.2/test/handler.test.js
new file mode 100644
index 0000000..af5938e
--- /dev/null
+++ b/capitulo_5/5.9.2/test/handler.test.js
@@ -0,0 +1,23 @@
+const { redirect } = require('../src/handler')
+const event = {
+	"resource": "/{id}",
+	"path": "/iNxun1bg5Y",
+	"httpMethod": "GET",
+	"pathParameters": {
+		"id": "iNxun1bg5Y"
+	},
+	"body": null,
+	"isBase64Encoded": false
+}
+
+it('#redirect', async () => {
+    const result = await redirect(event)
+    expect(result.statusCode).toBe(301)
+    expect(result.headers).toEqual({ Location: 'https://www.novatec.com.br/livros/nodejs-3ed/' })
+    expect(typeof result.body).toBe('string')
+})
+it('#redirect link non existent', async () => {
+    const result = await redirect({ pathParameters: { id: 'non-existent' }})
+    expect(result.statusCode).toBe(404)
+    expect(result.body).toBe('{}')
+})
\ No newline at end of file
diff --git a/capitulo_5/5.9.2/test/setup.js b/capitulo_5/5.9.2/test/setup.js
new file mode 100644
index 0000000..54a162a
--- /dev/null
+++ b/capitulo_5/5.9.2/test/setup.js
@@ -0,0 +1,24 @@
+require('dotenv').config()
+const { mockClient } = require('aws-sdk-client-mock')
+const { DynamoDBDocumentClient, GetCommand, QueryCommand, PutCommand, ScanCommand, DeleteCommand } = require ('@aws-sdk/lib-dynamodb')
+const ddbMock = mockClient(DynamoDBDocumentClient)
+const mockData = {
+  link: 'https://www.novatec.com.br/livros/nodejs-3ed/'
+}
+ddbMock
+  .on(GetCommand)
+  .resolves({ Item: undefined })
+  .on(GetCommand, {
+    TableName: 'Shortener',
+    Key: { id: 'iNxun1bg5Y' }
+  })
+  .resolves({ Item: mockData })
+
+ddbMock
+  .on(QueryCommand)
+  .resolves({ Items: [mockData] })
+
+ddbMock
+  .on(PutCommand).resolves({})
+  .on(DeleteCommand).resolves({})
+ddbMock.on(ScanCommand).resolves({ Items: [mockData] })
\ No newline at end of file
diff --git a/capitulo_5/5.9.2/test/shortener.test.js b/capitulo_5/5.9.2/test/shortener.test.js
new file mode 100644
index 0000000..93f7078
--- /dev/null
+++ b/capitulo_5/5.9.2/test/shortener.test.js
@@ -0,0 +1,69 @@
+const { byId, create, remove, list, update } = require('../src/shortener')
+
+it('#byId', async () => {
+  const result = await byId({
+    headers: {},
+    pathParameters: { id: 'iNxun1bg5Y' }
+  })
+  const expected = {
+    link: 'https://www.novatec.com.br/livros/nodejs-3ed/'
+  }
+  const body = JSON.parse(result.body || '{}')
+
+  expect(expected).toEqual(body)
+  expect(result.statusCode).toEqual(200)
+  expect(typeof result.body).toEqual('string')
+})
+
+it('#create', async () => {
+    const result = await create({
+      body: '{"link": "https://www.novatec.com.br/livros/nodejs-3ed/"}',
+      pathParameters: {}
+    })
+    const expected = {
+      message: 'created'
+    }
+    const body = JSON.parse(result.body || '{}')
+  
+    expect(expected).toEqual(body)
+    expect(201).toEqual(result.statusCode)
+    expect(typeof result.body).toEqual('string')
+})
+it('#list', async () => {
+  const result = await list({ headers: {} })
+  const expected = {
+    size: 50,
+    links: [{}],
+    items: [{ link: 'https://www.novatec.com.br/livros/nodejs-3ed/' }]
+  }
+  const body = JSON.parse(result.body || '{}')
+
+  expect(body).toEqual(expected)
+  expect(result.statusCode).toEqual(200)
+  expect(typeof result.body).toEqual('string')
+})
+it('#remove', async () => {
+  const result = await remove({
+    headers: {},
+    pathParameters: { id: 'iNxun1bg5Y' }
+  })
+
+  expect(result.body).toEqual('')
+  expect(result.statusCode).toEqual(200)
+  expect(typeof result.body).toEqual('string')
+})
+
+it('#update', async () => {
+  const result = await update({
+    body: '{"link": "https://www.novatec.com.br/livros/nodejs-3ed/"}',
+    pathParameters: { id: 'iNxun1bg5Y' }
+  })
+  const expected = {
+    message: 'updated'
+  }
+  const body = JSON.parse(result.body || '{}')
+
+  expect(expected).toEqual(body)
+  expect(200).toEqual(result.statusCode)
+  expect(typeof result.body).toEqual('string')
+})
\ No newline at end of file