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Use the Fork Luke. Who Cares About ANSI?. 2005 OSCON -> 1/(20+). Custom Advisory Board 2005. (the customers who cared about 5.0 were Embedded). Do Not Live in the Past. Master Plan. Rethink Everything. Do not assume everything was bad. Focus. Drop ERP (90’s style applications)
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Custom Advisory Board 2005 • (the customers who cared about 5.0 were Embedded)
Drop ERP (90’s style applications) • Drop Data Warehousing • Drop Analytic
The world is 64bit, and there is a lot of RAM. • (SSD will be common in two years.)
MicroKernel • Move code to the Edge • No new features in core • To add interfaces you have to remove == amount of code
Multi-Core • No new locks • Remove old locks • Think today: • Burn memory (copy on write) • Messages scales.
ACID CompliantTransactional • (Don’t lose or corrupt data)
Innodb is our Default Engine • (If Maria or PBXT turn out to be faster, we will switch. Transactional/Performance matter.)
We have no... • Stored Procedures • Views • Triggers • No Query Cache
Prepared Statements are out. • (no one uses them, they blow up the server)
What we are doing... • No required authentication (think http) • Round Trip Serialized SQL • Make SQL Injection harder
Dump ACL • We authenticate in clouds. • KISS • PAM (Pluggable Authentication Modules) • No cost authentication
Field Types • Less primitives • We just now have “blob” • Weakly Typed. • 3 byte int? (See Slashdot Comment Problem) • Think UUID/IPV4(6)/SERIAL... • ENUM tosses an error if a wrong value is inserted.
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Recycle • (be lazy, re-use libraries)
Reuse many eyeballs • PCRE today (not REGEX) • No “shipped” libraries • Maybe ICU? libatomic-ops? Intel Building Blocks? talloc()? glib()? • Proto-buffers.
Maintenance Matters • (Refactoring is valuable and necessary)
In with the New • C99 (types for C++ code) • Posix • Package-lib • STL is in.
TABLE != Table • (we are going from C+ to C++)
How big is it? • 6.0.5-alpha:1,128,112 • 5.1.25-rc: 1,009,108 • 5.0.51b: 999,382 • Drizzle: 315,560 generated using David A. Wheeler's 'SLOCCount'.
Performance Matters • (we all want race cars)
Scale Out • Optimizer (OLTP) • Execution Engine
LaunchPad • Forking is good, no emailed patches. • Anyone can create an account. • Transparency by Launchpad staff.
Buildbot • 26 Active platforms. • Anyone can sign up a new platform. • Completely distributed.
Open Source • All internal and external contributors are equal. • “Captains” handle trees, karma gets you in • Those who commit are Janitors. • Those who only work on their own code are not Captains. • Changes are sent to mailing list. Fuzzy ++ system used (negatives are weighed more heavily)
30+ Languages • (within 3 months)
Requirement for Release • All Incompatible Changes are completed. (and more require upgrades to version) • All tests work. • New code additions are fine (think Linux Kernel)
Federated X • Patrick Galbraith (Principle Engineer/Lycos) • Antony Curtis (Google) • Transactional • Multi-System • Integrated • Performance
Transport • Eric Day (Architect XO) • Asynchronous • Multi-protocol • Partionalable
Distributed Query Cache • Toru Maesake (Research Engineer/Mixi.jp) • Non-locking • Cloud Distributed (Memcached) • Pluggable