The Changing Face of ETL: Event-Driven Architectures for Data Engineers

The Changing Face of ETL Event-Driven Architectures for Data Engineers Photo by rmoff @rmoff

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Photo by Patrick Fore on Unsplash It used to be so simple @rmoff #KScope19 The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Photo by Eugenio Mazzone on Unsplash More Sources The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Photo by Tom Barrett on Unsplash More Targets The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Photo by Kirill on Unsplash More Data The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Batches and Buckets The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Applications Respond Photo by Deva Darshan from Pexels → an order was placed! Analytics Tell Us What Happened → how many orders were placed The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 The Changing Face of ETL: Event-Driven Architectures for Data Engineers

Photo by NASA on Unsplash @rmoff #KScope19 The Changing Face of ETL: Event-Driven Architectures for Data Engineers

Photo by Mark Kamalov on Unsplash Events

@rmoff #KScope19 “ An event is both: * Notification * State transfer The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 A Customer Experience The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 A Sensor Reading The Changing Face of ETL: Event-Driven Architectures for Data Engineers

Events @rmoff #KScope19 Basket Bread Canned Spaghetti The Changing Face of ETL: Event-Driven Architectures for Data Engineers

Events @rmoff #KScope19 Basket Bread ItemAdd Bread The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Events Basket Bread ItemAdd ItemAdd Bread Baked Beans Baked Beans The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Events Basket Bread ItemAdd ItemAdd ItemRemove Bread Baked Beans Baked Beans The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Events Basket Bread ItemAdd ItemAdd ItemRemove ItemAdd Bread Baked Beans Baked Beans Canned Spaghetti Canned Spaghetti The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Events Basket Bread ItemAdd ItemAdd ItemRemove ItemAdd Bread Baked Beans Baked Beans Canned Spaghetti Canned Spaghetti The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Events Basket Bread ItemAdd ItemAdd ItemRemove ItemAdd Bread Baked Beans Baked Beans Canned Spaghetti Canned Spaghetti The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Events Basket Bread ItemAdd ItemAdd ItemRemove ItemAdd Bread Baked Beans Baked Beans Canned Spaghetti Canned Spaghetti The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Databases The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Do you think that’s a table you are querying? The Changing Face of ETL: Event-Driven Architectures for Data Engineers

Time The Stream/Table Duality Table @rmoff #KScope19 Stream Account ID Amount 12345 + €50 12345

• €25 12345 -€60 Account ID Balance 12345 €50 Account ID Balance 12345 €75 Account ID Balance 12345 €15 The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 The truth is the log. The database is a cache of a subset of the log. —Pat Helland Immutability Changes Everything http://cidrdb.org/cidr2015/Papers/CIDR15_Paper16.pdf The Changing Face of ETL: Event-Driven Architectures for Data Engineers Photo by Bobby Burch on Unsplash

@rmoff #KScope19 What is an Event Streaming Platform? Producer Connectors Consumer The Log Connectors Streaming Engine The Changing Face of ETL: Event-Driven Architectures for Data Engineers

Immutable Event Log Old @rmoff #KScope19 New Messages are added at the end of the log The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Photo by Ash from Modern Afflatus on Unsplash This is Something New The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Events in Action Review events reviews The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Events in Action Review events reviews Operational dashboard The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Events in Action Review events reviews Operational dashboard Data lake The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Events in Action Review events CREATE STREAM reviews_clean AS SELECT * FROM reviews WHERE id IS NOT NULL; reviews reviews_clean Operational dashboard Filter out bad data Data lake The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Events in Action Existing apps User data RDBMS txn log users Kafka Connect Kafka The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Events in Action Review events reviews users reviews_clean Operational dashboard User data Data lake The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Events in Action Review events CREATE CREATE SELECT SELECT STREAM enriched_reviews AS STREAM reviews_clean AS ** FROM reviews_clean r FROM reviews INNER JOIN users u WHERE id IS NOT NULL ON r.userid=u.userid; reviews users reviews_clean enriched_reviews Operational dashboard User data Join events to users, and filter Data lake The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Events in Action Notification service Review events Operational dashboard User data Data lake The Changing Face of ETL: Event-Driven Architectures for Data Engineers

Events in Action Review events @rmoff #KScope19 CREATE STREAM unhappy_vips AS SELECT * FROM enriched_reviews WHERE rating Notification< 3 AND status = ‘Platinum’; service reviews users reviews_clean enriched_reviews Operational dashboard unhappy_vips User data Join events to users, and filter Data lake The Changing Face of ETL: Event-Driven Architectures for Data Engineers

Photo by rmoff The Power of an Event-Driven Architecture

Not Everything is a Nail Events @rmoff #KScope19 RDBMS The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Not Everything is a Nail Events RDBMS The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Not Everything is a Nail Events Elasticsearch RDBMS The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Not Everything is a Nail Graph Events Elasticsearch RDBMS The Changing Face of ETL: Event-Driven Architectures for Data Engineers

Side-by-Side Tech Evaluation @rmoff #KScope19 Events HDFS The Changing Face of ETL: Event-Driven Architectures for Data Engineers

Side-by-Side Tech Evaluation Events @rmoff #KScope19 BiqQuery HDFS The Changing Face of ETL: Event-Driven Architectures for Data Engineers

Side-by-Side Tech Evaluation @rmoff #KScope19 Snowflake Events BiqQuery HDFS The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Evolve Data Sources Producer Onpremises Consuming App A Consuming App B The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Evolve Data Sources Producer Onpremises Producer Consuming App A Consuming App B Cloud The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Evolve Data Sources Consuming App A Producer Consuming App B Cloud The Changing Face of ETL: Event-Driven Architectures for Data Engineers

Tight Coupling != Flexible Orders @rmoff #KScope19 RDBMS The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Tight Coupling != Flexible Orders RDBMS HDFS The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Tight Coupling != Flexible Orders RDBMS HDFS App The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Loose Coupling == Freedom to Evolve RDBMS Orders The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Loose Coupling == Freedom to Evolve RDBMS Orders HDFS The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Loose Coupling == Freedom to Evolve RDBMS Orders App HDFS The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Transform Once, Use Many: Data Cleansing temp_raw App IoT App RDBMS The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Transform Once, Use Many: Data Cleansing sensor_id time_epoch 42 1551136074 42 1551136125 1551136125 42 1551138129 IoT reading 13.05 13.11 13.11 13.04 temp_raw App App RDBMS The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Transform Once, Use Many: Data Cleansing sensor_id time_epoch 42 1551136074 42 1551136125 1551136125 42 1551138129 IoT reading 13.05 13.11 13.11 13.04 temp_raw Cleanse App App Cleanse RDBMS Cleanse The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Transform Once, Use Many: Data Cleansing sensor_id time_epoch 42 1551136074 42 1551136125 1551136125 42 1551138129 reading 13.05 13.11 13.11 13.04 IoT temp_clean sensor_id 42 42 42 App time_epoch 1551136074 1551136125 1551138129 reading 13.05 13.11 13.04 App temp_raw SENSOR_ID IS NOT NULL RDBMS The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Transform Once, Use Many: Data Enrichment RDBMS Events App 01 Join The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Transform Once, Use Many: Data Enrichment RDBMS Events App 01 Join Elasticsearch App 02 Join The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 Transform Once, Use Many: Data Enrichment App 01 Events Elasticsearch RDBMS Join The Changing Face of ETL: Event-Driven Architectures for Data Engineers

Photo by rmoff Events model the real world

Photo by rmoff Say NO to brittle pipelines

@rmoff #KScope19 App App App App cache monitoring cache MQ DWH security MQ search Hadoop The Changing Face of ETL: Event-Driven Architectures for Data Engineers

@rmoff #KScope19 App App App App request-response changelogs App App KAFKA App App DWH Hadoop messaging OR stream processing streaming data pipelines The Changing Face of ETL: Event-Driven Architectures for Data Engineers

CONFLUENT COMMUNITY DISCOUNT CODE KS19Meetup. 25% OFF* *Standard Priced Conference pass

@rmoff #KScope19 http://cnfl.io/book-bundle The Changing Face of ETL: Event-Driven Architectures for Data Engineers

Photo by rmoff confluent.io/download http://cnfl.io/book-bundle http://cnfl.io/slack @rmoff

@rmoff #KScope19 Resources • CDC Spreadsheet #EOF • Blog: No More Silos: How to Integrate your Databases with Apache Kafka and CDC • #partner-engineering on Slack for questions • BD team (#partners / partners@confluent.io) can help with introductions on a given sales op The Changing Face of ETL: Event-Driven Architectures for Data Engineers