NDB Cluster has been used for a variety of real-time and high availability applications since the late 1990s. These include number portability services, stock quote applications, LDAP servers, carrier systems, gaming applications, financial applications, OpenStack services, Hadoop HDFS, and global architectures at companies like GE. NDB Cluster provides a low-latency database layer to enable these applications to serve data and state reliably across many nodes.

1. Copyright © 2020 Oracle and/or its affiliates.
MySQL NDB Cluster 8.0,
Use Cases
MySQL Cluster Development
Mikael Ronström

2. Number Portability Demo
First NDB Cluster application 1998
AXE
RP
RP
SPARC
Computer
SPARC
Computer
Ethernet
APZ
Ethernet
Dolphin SCI
Interconnect
AXE = Telecom Switch
APZ = Central Computer
RP = Regional Computer
NDB Cluster Provided Low Latency database service to
Number Portability Application in APZ

3. Stock Quote App using NDB API
NDB API
Stock
Order
Feed
NDB Datanode
Real-time Stock
Quotes
First Customer Delivery,
Prototype 2001

4. Users
DNS/DHCP/.. Server
NDB API
DNS/DHCP/.. Server
NDB API
ndbmtd ndbmtd
computer 1
computer 4
computer 3
computer 2
First NDB Application in Production, B2 2004
Still operational
B2 = Internet provider
Used it myself for 10 years

5. Applications
slapd
NDB API
slapd
NDB API
NDB Datanode NDB Datanode
Computer 1
Computer 4
Computer 3
Computer 2
NDB Cluster as LDAP Server (using OpenLDAP)

6. Juniper SBR Carrier System
LDAP/HTTPS/CLI/RADIUS
…………………………
NDB is
High Availability Session State Database
SBR
Carrier SQL
MySQL
Servers
MySQL
Servers
…..
SBR
Carrier
NDB
Datanode
NDB
Datanode
NDB
Datanode
NDB
Datanode
Switch

7. Gamers
Gaming app Gaming app Gaming app
mysqldmysqld mysqld
ndbmtd ndbmtd ndbmtd
computer 1 computer 2 computer n
Scalable Gaming Application

8. Financial Apps using Direct API
Cluster J
Stock
Order
Feed
NDB Datanode NDB Datanode
Real-time Stock
Quotes

9. Financial Apps using SQL
Real-time Stock
Quotes
JDBC
Stock
Order
Feed
mysqld
ndbmtd ndbmtd

10. Train control Vehicle control
mysqld mysqld
ndbmtd
ndbmtd
Computer 1 Computer 2
Soft real-time applications

11. swift
mysqld
Nova Neutron Horizon
mysqld
ndbmtd ndbmtd
Computer 1 Computer 2
Oracle OpenStack

12. Hadoop HDFS without NDB Cluster
Journal Nodes Zoo Keeper
HDFS DataNodes
………….
HDFS
Client
Active
Name
Node
Standby
Name
Node

13. ………
NDB Data Nodes
……….
Name Nodes Leader
……….
HDFS Data Nodes
HDFS
Client
HopsFS
Hadoop HDFS with NDB Cluster

14. Data
Center
US
Data
Center
Europe
Data
Center
Asia
GE Global Architecture
Keynote 2015, MySQL Conference

15. NDB
Mgmt Server
MySQL Server
NDB
Mgmt Server
MySQL Server
NDB Datanode NDB Datanode
……………………… App Server
Load
Balancer
App Server
GE NDB Cluster Architecture

16. …………………….
Cluster A Data Center A Cluster B Data Center B
NDB
Datanode
Rep
Channel
Switch Switch
NDB
Datanode
NDB
Datanode
NDB
Datanode
NDB
Mgmt Server
MySQL
Server
NDB
Mgmt Server
MySQL
Server
NDB
Mgmt Server
MySQL
Server
NDB
Mgmt Server
MySQL
Server
Load Balancer
App ServerApp Server
GE, Global NDB Cluster Architecture