Cedrick Lunven presents on the gateway for multi-model Data APIs. The presentation discusses why data gateways are rising in popularity, the architecture and implementations of gateways like Stargate, how Apache Cassandra can be used as a multi-model database, and demos Astra which is a Cassandra-as-a-Service. The presentation aims to explain the benefits of data gateways for both developers and database administrators.

1. Saturday 24th october – version -0.1
@clunven | Cedrick.lunvenx@datastax.com
Cedrick Lunven| DataStax, Inc.
The gateway for multi-models Data API

2. About Me
🥑
Creator and
Maintainer of FF4j
 Training
 Teaching
 Reference applications
 Support
 Public Speaking

3.  Academy.datastax.com
 datastax.com/dev
 community.datastax.com
 YouTube Channel

4. Agenda
4 © 2020 Datastax, Inc. All rights reserved.
 Why: The rising of Data Gateways
 What: Architecture and Implementations
 How: Multi-models DB
 Demo, talk is cheap
 Who: Astra, the NEXT Generation Dbaas

5. “Start with Why” Simon Sinek
• Developers
• Do you like learning query languages (CQL, N1QL, GQL, SQL, graphQL, cypher, gremlin….)
• No. Save my JSON, give it to me back when I need it
• This is why Spring Data and ORM are so used nowadays
• Do you care about how your data is stored ?
• Physical data model part of the interface…yike
• Do you like installing and running Databases locally
• and specially distributed databases
© 2020 Datastax, Inc. All rights reserved.5

6. “Start with Why” Simon Sinek
• Ops and Databases Administrators…
• Do you allow developers to execute direct queries against your
DB ?
• Do you like opening port range like 0-65536 to allow
communications with applications, specially in the cloud.
• Do you like creating dedicated project and hiring people just to
create APIs to expose an existing treatment (digital
transformation FTW)

7. And when those 2 meet each other
DB ADMINDeveloper

8. Data Gateways rational
Ubiquitous, API-based Consumption
MICROSERVICES DEVELOPERS
Developers want the option
to use moden APIs and
development gateways.
Cassandra is a database
designed for the new
standard and the associated
APIs that facilitate the first
choice of developers.

9. Agenda
9 © 2020 Datastax, Inc. All rights reserved.
 Why: The rising of Data Gateways
 What: Architecture and Implementations
 How: Multi-models DB
 Demo, talk is cheap
 Who: Astra, the NEXT Generation Dbaas

10. Stargate Overview
An open source API framework for data
Stargate makes it easy to use a
database for any application
workload by adding plugin support for
new APIs, data types, and access
methods
MICROSERVICES DEVELOPERS

11. Logical Architecture
Integrations
Kafka
Spark
Hadoop
Snowflake
Jupyter
...
Spring
Quarkus
Stargate
JSONREST GraphQL SQL GRPC
StorageStorageStorage
React
Node.js
Swift
Flutter
Database
(Cassandra)
WebSocket Events

12. Separate Compute and Storage
1
2
3
46
5
Stargate Storage ClusterApplication

13. API Extension and Persistence Extensions
REST GraphQL KAFKA
(incubating)
Cassandra
Document
API
CQL
GA

14. Agenda
14 © 2020 Datastax, Inc. All rights reserved.
 Why: The rising of Data Gateways
 What: Architecture and Implementations
 How: Apache Cassandra Multi-models DB
 Demo, talk is cheap
 Who: Astra, the NEXT Generation Dbaas

15. Modules

16. Agenda
16 © 2020 Datastax, Inc. All rights reserved.
 Why: The rising of Data Gateways
 What: Architecture and Implementations
 How: Multi-models DB
 Demo, talk is cheap
 Who: Astra, the NEXT Generation Dbaas

17. NODE
NODE
NODE
NODE
NODE NODE
NODE
Apache Cassandra™
1 Installation = 1 NODE
 Capacity: ± 1TB
 Throughput: 3000 Tx/sec/core
Communication:
 Gossiping
DataCenter | Ring
= NoSQL Distributed Database

18. Scales Linearly
• Need more capacity?
• Need more throughput?
• Add nodes!

19. Data is Distributed
Country City Habitant
USA New York 8.000.000
USA Los Angeles 4.000.000
FR Paris 2.230.000
DE Berlin 3.350.000
UK London 9.200.000
AU Sydney 4.900.000
FR Toulouse 1.100.000
JP Tokyo 37.430.000
IN Mumbai 20.200.000
DE Nuremberg 500.000
CA Montreal 4.200.000
CA Toronto 6.200.000
Partition Key

20. Data Distributed Everywhere
20
• Geographic Distribution • Hybrid-Cloud and Multi-Cloud
On-premises

21. Cap Theorem
Consistency Availability
Partition
Tolerance
DefaultConfigure per
request

22. Immediate Consistency
Client
Write
CL = QUORUM
Read
CL = QUORUM
Client
Strongly Consistent : CL read + CL write > RF

23. Understanding Use Cases
High Throughput
High Volume
Heavy Writes
Heavy Reads
Event Streaming Log Analytics
Internet of Things Other Time Series
Mission-Critical
No Data Loss
Always-on
Scalability
Availability
Distributed
Cloud-native
Caching Pricing
Market Data Inventory
Banking Retail
Tracking / Logistics
Customer
Experience
API Layer Hybrid-cloud
Enterprise Data
Layer
Multi-cloud
Modern Cloud
Applications
Global Presence
Workload Mobility
Compliance / GDPR

24. Multi Model Database
• Tabular (with Tables as discussed before)
• Key Value (sub pattern of previous with single column)
• Document
− INSERT AND READ JSON with CQL but a schema is neede
− Stargate document API to the rescue
• TSDB
− Cassandra fit the time series data models with aggregations
• Graph
− DataStax Enterprise integrate a graph Engines

25. Agenda
25 © 2020 Datastax, Inc. All rights reserved.
 Why: The rising of Data Gateways
 What: Architecture and Implementations
 How: Multi-models DB
 Demo, talk is cheap
 Who: Astra, the NEXT Generation Dbaas

26. Agenda
26 © 2020 Datastax, Inc. All rights reserved.
 Why: The rising of Data Gateways
 What: Architecture and Implementations
 How: Multi-models DB
 Demo: talk is cheap
 Who: Astra, the NEXT Generation Dbaas

27. Introducing Astra
CASSANDRA-AS-A-SERVICE
Cloud-native Database-as-a-
Service built on Apache Cassandra
NO OPERATIONS
Eliminate the overhead to install,
operate, and scale Cassandra.
POWERFUL APIS
Out-of-the-box REST and
GraphQL endpoints and browser
CQL shell.
CLOUD NATIVE
Powered by our open-source
Kubernetes Operator for
Cassandra.
ZERO LOCK-IN
Deploy on AWS or GCP and
keep compatibility with open-
source Cassandra.
10 GIG FREE TIER
Launch a database in the
cloud with a few clicks, no
credit card required.

28. Simplify Application Development
INSERT INTO mytable
(id,name,address) VALUES
(1,’Bob Smith’,’1 Main
Street’)
SELECT * FROM mytable WHERE
id=1
UPDATE mytable SET
name=’Tom Smith’ WHERE id=1
DELETE FROM mytable WHERE
id=1
Familiar Language Easy Dev Tools Great Drivers

29. .. And Stargate Enabled

30. 30 © 2020 Datastax, Inc. All rights reserved.
ENERGY
MEDIA / TELECOMMUNICATIONS RETAIL / FOOD & BEVERAGE
FINANCIAL SERVICES TRANSPORTATION / LOGISTICS
TECHNOLOGY & IT SERVICES

31. Thank You!
31 © 2020 Datastax, Inc. All rights reserved.