Overview of the main features that went in MYSQL 8.0 like New Data Dictionary, Security, InnoDB, Group Replication, Optimizer, Enterprise Backup, Upgrade Checker, Document Store, and MySQL Cloud.

1. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. | DevOps Bangalore Meetup | LinkedIn, Bangalore, 28th March, 2015 1
What’s new in
MySQL 8.0
MySQL Team
April 27, 2018

2. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. |
Agenda
Data Dictionary
Server General
InnoDB
Group Replication
Optimizer
Enterprise Backup
Upgrade Checker
Document Store
References
Q & A
1
2
3
4
2
5
6
8
7
9
10

3. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. |
What’s new in MySQL 8.0 – Data Dictionary
3
MySQL 8.0 increases the overall reliability
because:
✔ MySQL 8.0 stores its meta-data into
InnoDB, a proven transactional storage
engine.
✔ MySQL 8.0 eliminates one source of
potential inconsistency (5.7 had two
dictionaries)
✔ MySQL 8.0 ensures atomic, crash safe
DDL.
✔ MySQL 8.0 reimplements Information
Schema, as simple views on data
dictionary tables which execute up to 100
times faster than 5.7.
Related blogs:
https://mysqlserverteam.com/atomic-ddl-in-
mysql-8-0/
https://mysqlserverteam.com/further-
improvements-on-information_schema-in-
mysql-8-0-3/
Data Dictionary
InnoDB
Storage
Engine
DD TableDD Table
Transactional
Dictionary
Tables
Metadata store in 8.0
SQL
Data Dictionary
Files
FRM TRG OPT
System Tables (mysql.)
user procevents
InnoDB System Tables
(plugin,engine,help_*,servers,etc)
MyISAM
File system
InnoDB
Metadata store in 5.7
SQL

4. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. |
What’s New in MySQL 8.0 – Server General
• Security: Roles, Caching_sha2_plugin (new default), Password History
Checks
• MySQL Options: Support for persisted option settings (SET PERSIST)
• Performance Schema: Histogram, index support for PS tables
4

5. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. |
What’s New in MySQL 8.0 – InnoDB
5
• UNDO LOGS
₋ Flexible Undo Tablespace Management
₋ Encrypted
• REDO LOGS
₋ Re-designed. Lock free user threads. Improved performance.
₋ Encrypted
• DDL
₋ Atomic and crash safe
• BLOB
₋ Partial fetch/updates.
• Auto configurable (cloud friendly):
₋ innodb_dedicated_server=ON/OFF

6. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. |
Automatic Flow ControlPrimary Election WeightsPreventing involuntary data updatesMySQL 8.0: What’s new in Group ReplicationNetwork Partition
6
• Primary Election Weights
• Preventing involuntary data updates
• Automatic Flow Control
• Network Partition

7. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. |
What’s new in MySQL 8.0 – Optimizer
7
●
For Developers: CTEs, Window functions, JSON table function
●
For DBAs : Invisible Index, Histograms, Cost Model Improvements

8. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. |
What’s new in MySQL 8.0 – Enterprise Backup
8
●
Transparent Encrypted tables based on
– Keyring Encrypted File
– Oracle Key Vault
– Key Management Interoperability Protocol
– Amazon Key Management server
●
Basic Authentication and non-chunked transfer for
Oracle Cloud Infrastructure Classic
●
Remote tablespace metadata in JSON format

9. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. |
What’s new in 8.0 – Upgrade Checker
9
● What: Upgrade Checker in 8.0 introduced to make upgrade process
quick and as easy as possible
● Where: Available as Utility in mysqlshell in python and JavaScript modes
● How: Connect to mysqlshell session to the server with connection
arguments
● When: Upgrade from 5.7 to 8.0

10. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. |
What’s new in MySQL 8.0 - Document Store
10

11. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. |
What’s new in MySQL 8.0 – MySQL Cloud
11

12. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. |
References
12
● MySQL Blogs : https://blogs.oracle.com/mysql
● MySQL Support team Blogs: https://dev.mysql.com/support/blogs
● Planet MySQL : https://planet.mysql.com
● MySQL User Camp in Bangalore
● MySQL forums across the internet : Thank you MySQL community
● When all else fails: Documentation : https://dev.mysql.com/doc

13. Copyright © 2018, Oracle and/or its affiliates. All rights reserved. |
Q & A
13