The document discusses MySQL's implementation of NoSQL capabilities within its traditional SQL database. MySQL 5.6 introduced a Memcached plugin that allows for fast, non-SQL key-value access to data stored in InnoDB tables. This provides the speed of NoSQL with the ACID compliance and crash recovery of SQL. The plugin can be installed and configured, then data accessed from either Memcached clients or SQL. This allows MySQL to serve as both a traditional SQL database and a NoSQL store.

1. MySQL's NoSQL with SQL –
Best of Both Worlds
➔Dave Stokes
➔ MySQL Community Manager
➔ David.Stokes@oracle.com @Stoker
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3. MySQL Releases since 2010
• Enterprise Monitor 2.2, 2.3
• Cluster 7.1, 7.2, 7.3
• Cluster Manager 1, 1.1, 1.3
• Workbench 5.2, 6, 6.1
• Database 5.5, 5.6, DMR 5.7
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• Oracle VM for MySQL
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• Windows Installer
• Utilities 1.0.6
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• Fabric (RC)
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● More Developers
● More QA
● More Support
● Making $$
● Classes popular
– Instructor lead
– Self-paced
● We're hiring!

4. MySQL 5.6 GA 19 Months Ago – Best GA Ever
● Performance
– Scales to 48 CPU threads
– Up to 230% faster than 5.5
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● Faster Optimizer
– Performance
– Diagnostics
– Better Instrumentation
● Improved Replication
● NoSQL
– Fast – 9x
– Key/value, ACID
● InnoDB
– Better Transactional
throughput

5. MySQL Architecture
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6. Bypassing Syntax Check and Optimizer 9x Faster
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7. Handler Socket DeNA circa 2010
● Bypasses Optimizer & Parser
● Very Fast
● Limited Security
● Not ACID
● 750,000 accesses second
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8. Memcached w/InnoDB – a better way
● Runs in same process space, fast –1,140,000 accesses/second
● Data can be structure or unstructured
● InnoDB handles composing/decomposing data as part of multi
column support which cuts string handling in your application
● Crash safe and consistent data
● Can tune data passing between InnoDB/Memecached, transaction
levels, lock metadata (no DDL while in use)
● Can password protect Memcached via SASL
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9. Installation
● sudo apt-get install libevent-dev libmemcached-tools
● Memcached.so (already in 5.6/7)
– my.cnf
● plugin-load=libmemcached.so
– Or after boot
● mysql> install plugin daemon_memcached soname
"libmemcached.so";
● Check your ulimit (Look for failed to set rlimit for open files in logs)
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10. Installation continues
● Set up configuration tables
– innodb_memcached_config.sql
● Creates innodb_memcached schema
– cache_policies
– config_options
– Containers
● Test example
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11. Test from Memcached side
● telnet 127.0.0.1 11211
● set a11 10 0 9
● 123456789
● STORED
● get a11
● VALUE a11 0 9
● 123456789
● END
● quit
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The arguments to set are
– a11 is the key
– 10 is the flag to use
– 0 is the TTL
– 9 is the length of the string to
store
– 123456789 is the string to
store

12. Test from SQL side
c1 c2 c3 c4 c6
a11 123456789 10 3 0
Data is available through both Memcached & SQL at the same
time
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13. Options you can set
● Separator and table_map_delimiter (config_options)
● Policies (cache_policies)
– Use memcached, InnoDB (or NDB) for data store
● Name, schema, table name, key columns, value columns, flags,
cas_column, expiration, index to use on key
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14. Slide to check if audience is still awake
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15. Best uses
● Persistent Memcached layer
● Speed
– Drinking or Filling fire hose
● Simple applications, APIs
● When you don't want to pay for servers/disks for NoSQL only
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§ mysql.com
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- Customer use cases and success stories
§ dev.mysql.com
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- Forums
- Planet.MySQL.com
§ eDelivery.oracle.com
- Download and evaluate all MySQL products
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18. Q&A
David.Stokes@Oracle.com
@stoker
slideshare.net/davestokes
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