Hot tech 20161005 - ep0016 - idera - index insanity - how to avoid database chaos - dez - slides

1. @dez_blanchfield
CREATE INDEX Pindex
ON People(LastName)
database indexes are now
a black art and not the
stuff of mere mortals

2. @dez_blanchfield
database performance
by throwing tin at it !!

3. @dez_blanchfield
Database Performance Through Big Iron
DB performance can be improved with
•High performance server hardware
•Appropriately tuned Operating Systems
•Fast multi-core multi-threading CPU’s
•Having plenty of high speed RAM
•High throughput multi-bus backplanes
•High speed caching HDD’s & Storage Arrays
•Low latency networking & interconnects
•Clustering of database infrastructure

4. @dez_blanchfield
not all databases are created
equal.. there are databases,
and then there are,
“databases” !!

5. @dez_blanchfield
Databases: The Usual Suspects (SQL)

6. @dez_blanchfield
Databases: The Unusual Suspects (noSQL)

7. @dez_blanchfield
Databases: Beyond Super Human DBA’s

8. @dez_blanchfield
database indexing for improved
performance is a standard
industry practice

9. @dez_blanchfield
Explain Indexing Like I’m a 3 Year Old

10. @dez_blanchfield
database admins often consider
indexes to be the single most
critical tool for improving
database performance

11. @dez_blanchfield
Overview of Common Database Indexing
• Linear “unordered” .. n
– average search time = (n+1)/2
– average search time = n
• Binary “sorted” .. (n/2)+1
– average search time = log2(n)-1
– average search time = log2(n)
• B-Tree
– most common, allows logarithmic
selections, insertions, and deletions
• Bitmap
– store rowids associated with a key
value as a bitmap
• Hash
– large objects / blobs
– deals with equality but not inequality
• Clustered & Non-Clustered
• Spatial, Filtered, XML & Full Text

12. @dez_blanchfield
we’ve long passed a time when
super human database admins
could manually manage database
index performance tuning

13. @dez_blanchfield
Data Servers – Big Iron VS Cloud “XaaS”

14. @dez_blanchfield
even the world’s best dba’s need
to leverage the right tools to
deliver optimum index tuning