Prestaties monitoren

Streaming data met AWS Kinesis en Lambda

Maksim Pecherskiy

Data Engineer

Vorige les

Lambda-transformatie

def lambda_handler(event, context):

    comprehend = boto3.client('comprehend', 
                              region_name='us-east-1', 
                              aws_access_key_id = AWS_KEY, 
                              aws_secret_access_key=AWS_SECRET)

    output = []

    for record in event['records']:
        ...

Lambda-transformatie

def lambda_handler(event, context):
    ...
    for record in event['records']:

        dict_data = base64.b64decode(record['data']).decode('utf-8').strip()
        dict_data = json.loads(dict_data)

        sentiment_all = comprehend.detect_sentiment(
          Text=dict_data['text'], 
          LanguageCode=dict_data['lang'])
        dict_data['sentiment'] = sentiment_all['Sentiment']
        ...

Lambda-transformatie

def lambda_handler(event, context):
    ...
    for record in event['records']:
        ...

        output_record = {
            'recordId': record['recordId'],
            'result': 'Ok',
            'data': base64.b64encode(json.dumps(dict_data).encode('utf-8'))
        }

        output.append(output_record)
    return {'records': output}

Alles koppelen

firehoseDeliveryRole bijwerken

Delivery stream maken

CloudWatch

De stream moet dataverlies door downtime minimaliseren.

Logs (ruwe data)
Metrics (metingen van service-activiteiten)
Alarms (meldingen bij waarden buiten bereik)
Dashboards (visualisatie van metrics)

Faalkansen

Laten we oefenen!

Streaming data met AWS Kinesis en Lambda