Advantages and best practices for Amazon Aurora, a new engine that you can use with Amazon RDS with drop-in compatibility with MySQL.

1. ©2015, Amazon Web Services, Inc. or its affiliates. All rights reserved.
Amazon Aurora: Amazon’s New
Relational Database Engine
Danilo Poccia, AWS Technical Evangelist
@danilop
danilop

2. Current DB architectures are monolithic
Multiple layers of
functionality all on a
single box
SQL
Transactions
Caching
Logging

3. Current DB architectures are monolithic
Even when you scale
it out, you’re still
replicating the same
stack
SQL
Transactions
Caching
Logging
SQL
Transactions
Caching
Logging
Application

4. Current DB architectures are monolithic
SQL
Transactions
Caching
Logging
SQL
Transactions
Caching
Logging
Application Even when you scale
it out, you’re still
replicating the same
stack

5. Current DB architectures are monolithic
SQL
Transactions
Caching
Logging
SQL
Transactions
Caching
Logging
Storage
Application Even when you scale
it out, you’re still
replicating the same
stack

6. This is a problem.
For cost. For flexibility. And for availability.

7. Reimagining the relational database
What if you were inventing the database today?
You wouldn’t design it the way we did in 1970. At least not entirely.
You’d build something that can scale out, that is self-healing, and that
leverages existing AWS services.

8. Relational databases reimagined for the cloud
Speed and availability of high-end commercial databases
Simplicity and cost-effectiveness of open source databases
Drop-in compatibility with MySQL
Simple pay as you go pricing
Delivered as a managed service

9. A service-oriented architecture applied to the database
• Moved the logging and storage layer
into a multi-tenant, scale-out
database-optimized storage service
• Integrated with other AWS services
like Amazon EC2, Amazon VPC,
Amazon DynamoDB, Amazon SWF,
and Amazon Route 53 for control
plane operations
• Integrated with Amazon S3 for
continuous backup with
99.999999999% durability
Control PlaneData Plane
Amazon
DynamoDB
Amazon SWF
Amazon Route 53
Logging + Storage
SQL
Transactions
Caching
Amazon S3

10. Simple pricing
• No licenses
• No lock-in
• Pay only for what you use
Discounts
• Up to 45% with a 1-year RI
• Up to 66% with a 3-year RI
vCPU Mem Hourly Price
db.r3.large 2 15.25 $0.29
db.r3.xlarge 4 30.5 $0.58
db.r3.2xlarge 8 61 $1.16
db.r3.4xlarge 16 122 $2.32
db.r3.8xlarge 32 244 $4.64
• Storage consumed, up to 64 TB, is $0.10/GB-month
• IOs consumed are billed at $0.20 per million I/O
• Prices are for Virginia
Enterprise grade, open source pricing

11. Aurora Works with Your Existing Apps

12. Establishing our ecosystem
Business Intelligence Data Integration Query and Monitoring SI and Consulting
“It is great to see Amazon Aurora remains MySQL compatible; MariaDB connectors
work with Aurora seamlessly. Today, customers can take MariaDB Enterprise with
MariaDB MaxScale drivers and connect to Aurora, MariaDB, or MySQL without worrying about
compatibility. We look forward to working with the Aurora team in the future to further
accelerate innovation within the MySQL ecosystem.”— Roger Levy, VP Products, MariaDB

13. 1 – Establish baseline
a) MySQL dump/import
b) RDS MySQL to Aurora DB
snapshot migration
2 – Catch-up changes
a) Binlog replication
b) Tungsten Replicator
AuroraMySQL
2 - Replication
1 - Baseline
Achieving near zero downtime migration to Aurora

14. Amazon Aurora Is Highly Available

15. Aurora storage
• Highly available by default
– 6-way replication across 3 AZs
– 4 of 6 write quorum
• Automatic fallback to 3 of 4 if an
Availability Zone (AZ) is unavailable
– 3 of 6 read quorum
• SSD, scale-out, multi-tenant storage
– Seamless storage scalability
– Up to 64 TB database size
– Only pay for what you use
• Log-structured storage
– Many small segments, each with their own redo logs
– Log pages used to generate data pages
– Eliminates chatter between database and storage
SQL
Transactions
AZ 1 AZ 2 AZ 3
Caching
Amazon S3

16. Self-healing, fault-tolerant
• Lose two copies or an AZ failure without read or write availability impact
• Lose three copies without read availability impact
• Automatic detection, replication, and repair
SQL
Transaction
AZ 1 AZ 2 AZ 3
Caching
SQL
Transaction
AZ 1 AZ 2 AZ 3
Caching
Read and write availabilityRead availability

17. Traditional databases
• Have to replay logs since the last
checkpoint
• Single-threaded in MySQL;
requires a large number of disk
accesses
Amazon Aurora
• Underlying storage replays redo
records on demand as part of a
disk read
• Parallel, distributed, asynchronous
Checkpointed Data Redo Log
Crash at T0 requires
a re-application of the
SQL in the redo log since
last checkpoint
T0 T0
Crash at T0 will result in redo
logs being applied to each segment
on demand, in parallel, asynchronously
Instant crash recovery

18. Survivable caches
• We moved the cache out of
the database process
• Cache remains warm in the
event of a database restart
• Lets you resume fully loaded
operations much faster
• Instant crash recovery +
survivable cache = quick and
easy recovery from DB
failures
SQL
Transactions
Caching
SQL
Transactions
Caching
SQL
Transactions
Caching
Caching process is outside the DB process
and remains warm across a database restart

19. Multiple failover targets—no data loss
Page cache
invalidation
Aurora Master
30% Read
70% Write
Aurora Replica
100% New
Reads
Shared Multi-AZ Storage
MySQL Master
30% Read
70% Write
MySQL Replica
30% New Reads
70% Write
Single-threaded
binlog apply
Data Volume Data Volume
MySQL read scaling
• Replicas must replay logs
• Replicas place additional load on master
• Replica lag can grow indefinitely
• Failover results in data loss

20. Faster, more predictable failover
Failure Detection DNS Propagation
Recovery Recovery
App
running
DB
Failure
Failure Detection
Recovery
App
running
DB
Failure
?
DNS Propagation

21. Simulate failures using SQL
• To cause the failure of a component at the database node:
ALTER SYSTEM CRASH [{INSTANCE | DISPATCHER | NODE}]
• To simulate the failure of disks:
ALTER SYSTEM SIMULATE percent_failure DISK failure_type IN
[DISK index | NODE index] FOR INTERVAL interval
• To simulate the failure of networking:
ALTER SYSTEM SIMULATE percent_failure NETWORK failure_type
[TO {ALL | read_replica | availability_zone}] FOR INTERVAL interval

22. Amazon Aurora Is Fast

23. Write performance (console screenshot)
• MySQL Sysbench
• R3.8XL with 32 cores
and 244 GB RAM
• 4 client machines with
1,000 threads each

24. Read performance (console screenshot)
• MySQL Sysbench
• R3.8XL with 32 cores
and 244 GB RAM
• Single client with
1,000 threads

25. Read replica lag (console screenshot)
• Aurora Replica with 7.27 ms replica lag at 13.8 K updates per second
• MySQL 5.6 on the same hardware has ~2 s lag at 2 K updates per second

26. Writes scale with table count
-
10
20
30
40
50
60
70
10 100 1,000 10,000
Thousandsofwritespersecond
Number of tables
Write performance and table count
Aurora
MySQL on I2.8XL
MySQL on I2.8XL with RAM Disk
RDS MySQL with 30,000 IOPS (Single AZ)
Tables
Amazon
Aurora
MySQL
I2.8XL
local SSD
MySQL
I2.8XL
RAM disk
RDS MySQL
30K IOPS
(single AZ)
10 60,000 18,000 22,000 25,000
100 66,000 19,000 24,000 23,000
1,000 64,000 7,000 18,000 8,000
10,000 54,000 4,000 8,000 5,000
Write-only workload
1,000 connections
Query cache (default on for Amazon Aurora, off for MySQL)

27. Better concurrency
-
20
40
60
80
100
120
50 500 5,000
Thousandsofwritespersecond
Concurrent connections
Write performance and concurrency
Aurora
RDS MySQL with 30,000 IOPS (Single AZ)
Connections
Amazon
Aurora
RDS MySQL
30K IOPS
(single AZ)
50 40,000 10,000
500 71,000 21,000
5,000 110,000 13,000
OLTP Workload
Variable connection count
250 tables
Query cache (default on for Amazon Aurora, off for MySQL)

28. Replicas have up to 400 times less lag
2.6 3.4 3.9 5.4
1,000 2,000 5,000 10,000
0
50,000
100,000
150,000
200,000
250,000
300,000
Updates per second
Readreplicalaginmilliseconds
Read replica lag
Aurora
RDS MySQL;30,000 IOPS (Single AZ)
Updates per
second
Amazon
Aurora
RDS MySQL
30K IOPS
(single AZ)
1,000 2.62 ms 0 s
2,000 3.42 ms 1 s
5,000 3.94 ms 60 s
10,000 5.38 ms 300 s
Write workload
250 tables
Query cache on for Amazon Aurora, off for MySQL (best
settings)

29. Amazon Aurora Is Easy to Use

30. Simplify database management
• Create a database in minutes
• Automated patching
• Push-button scale compute
• Continuous backups to Amazon S3
• Automatic failure detection and failover
Amazon RDS

31. Simplify storage management
• Read replicas are available as failover targets—no data loss
• Instantly create user snapshots—no performance impact
• Continuous, incremental backups to Amazon S3
• Automatic storage scaling up to 64 TB—no performance or availability
impact
• Automatic restriping, mirror repair, hot spot management, encryption

32. Simplify data security
• Encryption to secure data at rest available soon
– AES-256; hardware accelerated
– All blocks on disk and in Amazon S3 are encrypted
– Key management via AWS KMS
• SSL to secure data in transit
• Network isolation via Amazon VPC by default
• No direct access to nodes
• Supports industry standard security and data
protection certifications
Storage
SQL
Transactions
Caching
Amazon S3
Application

33. Business Value
• Enables new applications and features
• Improved developer and IT productivity
• Simple, easy to manage infrastructure with less downtime
• Quick recovery from failures
• Low cost (1/10th of commercial databases)

34. Use Cases
• New Applications
• All MySQL applications
• High traffic web applications using relational databases
• Read/Write intensive databases
• SaaS applications/Multitenant products
• Existing RDS customers with volume size limitations (up to 64TB
with Aurora)
• Commercial database applicaitons that do not heavily rely on
vendor specific functionality (PL/SQL)

35. Amazon Aurora, the Relational Databases Reimagined
for the Cloud
Speed and availability of high-end commercial databases
Simplicity and cost-effectiveness of open source databases
Drop-in compatibility with MySQL
Simple pay as you go pricing
Delivered as a managed service

36. ©2015, Amazon Web Services, Inc. or its affiliates. All rights reserved.
Amazon Aurora: Amazon’s New
Relational Database Engine
Danilo Poccia, AWS Technical Evangelist
@danilop
danilop