1. Integration of a key-value database in the parameter management system of the ALFA framework CERN openlab Summer Students Lightning Talk Sessions Tom Van Steenkiste 26/08/2015

2. Tom Van Steenkiste2 Detector parameters › geometry › position › calibration › … › ROOT › ASCII › (SQL) › ?

3. Key-value database › requirements  1kB – 50MB  C/C++ interface › candidates  RAMCloud  Riak 26/08/2015Tom Van Steenkiste3

4. Performance framework 26/08/2015Tom Van Steenkiste4

5. Case-study: RAMCloud › object write speed  0B: 15µs  1MB: very slow  +1MB: not possible 26/08/2015Tom Van Steenkiste5

6. Case-study: Riak › C/C++ client  very buggy  last commit 1 year ago  no future support 26/08/2015Tom Van Steenkiste6

7. Case-study: Riak › 3 rd party C/C++ client  very buggy  last commit 1 year ago  incomplete 26/08/2015Tom Van Steenkiste7

8. Case-study: Riak › Java client  official library  future support  available now 26/08/2015Tom Van Steenkiste8

9. Case-study: Riak 26/08/2015Tom Van Steenkiste9

10. Case-study: Riak › simulations  # hosts  # nodes  consistency  backend  authentication 26/08/2015Tom Van Steenkiste10

11. Thank you! 26/08/2015Tom Van Steenkiste11