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Building a CQL driver

Building a CQL driver

Slides from my talk at Cassandra Summit EU 2013

8c21306523b16ba5dd35c3549bf90994?s=128

Theo Hultberg

October 17, 2013
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  1. #CASSANDRAEU CASSANDRASUMMITEU Theo Hultberg | Chief Architect, Burt Building a

    CQL driver
  2. #CASSANDRAEU @ICONARA Theo Hultberg Chief Architect at

  3. #CASSANDRAEU @ICONARA

  4. #CASSANDRAEU @ICONARA I LIKE RUBY AND I LIKE CASSANDRA

  5. #CASSANDRAEU @ICONARA start_native_transport: true

  6. #CASSANDRAEU @ICONARA JUST OPEN A SOCKET

  7. #CASSANDRAEU @ICONARA 01 00 2a 01 00 00 00 16

    00 01 00 0b 43 51 4c 5f 56 45 52 53 49 4f 4e 00 05 33 2e 30 2e 30
  8. #CASSANDRAEU @ICONARA 01 00 2a 01 00 00 00 16

    00 01 00 0b 43 51 4c 5f 56 45 52 53 49 4f 4e 00 05 33 2e 30 2e 30 81 00 2a 02 00 00 00 00
  9. #CASSANDRAEU @ICONARA 01 00 2a 01 00 00 00 16

    00 01 00 0b 43 51 4c 5f 56 45 52 53 49 4f 4e 00 05 33 2e 30 2e 30 81 00 2a 02 00 00 00 00
  10. #CASSANDRAEU @ICONARA 01 00 2a 01 00 00 00 16

    00 01 00 0b 43 51 4c 5f 56 45 52 53 49 4f 4e 00 05 33 2e 30 2e 30 81 00 2a 02 00 00 00 00 0000 0001 1000 0001
  11. #CASSANDRAEU @ICONARA 01 00 2a 01 00 00 00 16

    00 01 00 0b 43 51 4c 5f 56 45 52 53 49 4f 4e 00 05 33 2e 30 2e 30 81 00 2a 02 00 00 00 00
  12. #CASSANDRAEU @ICONARA 02 00 2a 01 00 00 00 16

    00 01 00 0b 43 51 4c 5f 56 45 52 53 49 4f 4e 00 05 33 2e 30 2e 30 82 00 2a 02 00 00 00 00
  13. #CASSANDRAEU @ICONARA 01 00 2a 01 00 00 00 16

    00 01 00 0b 43 51 4c 5f 56 45 52 53 49 4f 4e 00 05 33 2e 30 2e 30 81 00 2a 02 00 00 00 00
  14. #CASSANDRAEU @ICONARA 01 00 2a 01 00 00 00 16

    00 01 00 0b 43 51 4c 5f 56 45 52 53 49 4f 4e 00 05 33 2e 30 2e 30 81 00 2a 02 00 00 00 00
  15. #CASSANDRAEU @ICONARA 01 00 2a 01 00 00 00 16

    00 01 00 0b 43 51 4c 5f 56 45 52 53 49 4f 4e 00 05 33 2e 30 2e 30 81 00 2a 02 00 00 00 00
  16. #CASSANDRAEU @ICONARA 01 00 2a 01 00 00 00 16

    00 01 00 0b 43 51 4c 5f 56 45 52 53 49 4f 4e 00 05 33 2e 30 2e 30 81 00 2a 02 00 00 00 00
  17. #CASSANDRAEU @ICONARA 01 00 2a 01 00 00 00 16

    00 01 00 0b 43 51 4c 5f 56 45 52 53 49 4f 4e 00 05 33 2e 30 2e 30 81 00 2a 02 00 00 00 00
  18. #CASSANDRAEU @ICONARA 01 00 2a 01 00 00 00 16

    00 01 00 0b 43 51 4c 5f 56 45 52 53 49 4f 4e 00 05 33 2e 30 2e 30 81 00 2a 02 00 00 00 00
  19. #CASSANDRAEU @ICONARA 01 00 2a 01 00 00 00 16

    00 01 00 0b 43 51 4c 5f 56 45 52 53 49 4f 4e 00 05 33 2e 30 2e 30 81 00 2a 02 00 00 00 00
  20. #CASSANDRAEU @ICONARA 01 00 2a 01 00 00 00 16

    00 01 00 0b 43 51 4c 5f 56 45 52 53 49 4f 4e 00 05 33 2e 30 2e 30 81 00 2a 02 00 00 00 00
  21. #CASSANDRAEU @ICONARA 01 00 2a 01 00 00 00 16

    00 01 00 0b C Q L _ V E R S I O N 00 05 33 2e 30 2e 30 81 00 2a 02 00 00 00 00
  22. #CASSANDRAEU @ICONARA 01 00 2a 01 00 00 00 16

    00 01 00 0b 43 51 4c 5f 56 45 52 53 49 4f 4e 00 05 33 2e 30 2e 30 81 00 2a 02 00 00 00 00
  23. #CASSANDRAEU @ICONARA 01 00 2a 01 00 00 00 16

    00 01 00 0b 43 51 4c 5f 56 45 52 53 49 4f 4e 00 05 33 2e 30 2e 30 81 00 2a 02 00 00 00 00
  24. #CASSANDRAEU @ICONARA 01 00 2a 01 00 00 00 16

    00 01 00 0b 43 51 4c 5f 56 45 52 53 49 4f 4e 00 05 3 . 0 . 0 81 00 2a 02 00 00 00 00
  25. #CASSANDRAEU @ICONARA 01 00 2a 01 00 00 00 16

    00 01 00 0b 43 51 4c 5f 56 45 52 53 49 4f 4e 00 05 33 2e 30 2e 30 81 00 2a 02 00 00 00 00
  26. #CASSANDRAEU @ICONARA STARTUP READY

  27. #CASSANDRAEU @ICONARA READY {“CQL_VERSION”: “3.0.1”}

  28. #CASSANDRAEU @ICONARA OPTIONS SUPPORTED STARTUP READY

  29. #CASSANDRAEU @ICONARA OPTIONS {“CQL_VERSION”: [“3.0.0”, ...]} STARTUP READY

  30. #CASSANDRAEU @ICONARA OPTIONS SUPPORTED STARTUP AUTHENTICATE CREDENTIALS READY

  31. #CASSANDRAEU @ICONARA QUERY RESULT

  32. #CASSANDRAEU @ICONARA 01 00 00 07 00 00 00 19

    00 00 00 13 53 45 4c 45 43 54 20 2a 20 46 52 4f 4d 20 75 73 65 72 73 00 04 81 00 00 08 00 00 00 bf 00 00 00 02 00 00 00 01 00 00 00 03 00 0a 6d 79 6b 65 79 73 70 61 63 65 00 05 75 73 65 72 73 00 09 75 73 65 72 5f 6e 61 6d 65 00 0d 00 05 65 6d 61 69 6c 00 0d 00 08 70 61 73 73 77 6f 72 64 00 03 00 00 00 02 00 00 00 04 70 68 69 6c 00 00 00 0d 70 68 69 6c 40 69 6e 74 65 72 2e 6e 65 74 00 00 00 20 5e b6 3b bb e0 1e ee d0 93 cb 22 bb 8f 5a cd c3 00 00 00 03 73 75 65 00 00 00 0d 73 75 65 40 69 6e 74 65 72 2e 6e 65 74 00 00 00 20 32 7b 6f 07 43 58 11 23 9b c4 7e 15 44 35 32 73
  33. #CASSANDRAEU @ICONARA 01 00 00 07 00 00 00 19

    00 00 00 13 53 45 4c 45 43 54 20 2a 20 46 52 4f 4d 20 75 73 65 72 73 00 04 81 00 00 08 00 00 00 bf 00 00 00 02 00 00 00 01 00 00 00 03 00 0a 6d 79 6b 65 79 73 70 61 63 65 00 05 75 73 65 72 73 00 09 75 73 65 72 5f 6e 61 6d 65 00 0d 00 05 65 6d 61 69 6c 00 0d 00 08 70 61 73 73 77 6f 72 64 00 03 00 00 00 02 00 00 00 04 70 68 69 6c 00 00 00 0d 70 68 69 6c 40 69 6e 74 65 72 2e 6e 65 74 00 00 00 20 5e b6 3b bb e0 1e ee d0 93 cb 22 bb 8f 5a cd c3 00 00 00 03 73 75 65 00 00 00 0d 73 75 65 40 69 6e 74 65 72 2e 6e 65 74 00 00 00 20 32 7b 6f 07 43 58 11 23 9b c4 7e 15 44 35 32 73
  34. #CASSANDRAEU @ICONARA 01 00 00 07 00 00 00 19

    00 00 00 13 53 45 4c 45 43 54 20 2a 20 46 52 4f 4d 20 75 73 65 72 73 00 04 81 00 00 08 00 00 00 bf 00 00 00 02 00 00 00 01 00 00 00 03 00 0a 6d 79 6b 65 79 73 70 61 63 65 00 05 75 73 65 72 73 00 09 75 73 65 72 5f 6e 61 6d 65 00 0d 00 05 65 6d 61 69 6c 00 0d 00 08 70 61 73 73 77 6f 72 64 00 03 00 00 00 02 00 00 00 04 70 68 69 6c 00 00 00 0d 70 68 69 6c 40 69 6e 74 65 72 2e 6e 65 74 00 00 00 20 5e b6 3b bb e0 1e ee d0 93 cb 22 bb 8f 5a cd c3 00 00 00 03 73 75 65 00 00 00 0d 73 75 65 40 69 6e 74 65 72 2e 6e 65 74 00 00 00 20 32 7b 6f 07 43 58 11 23 9b c4 7e 15 44 35 32 73
  35. #CASSANDRAEU @ICONARA 01 00 00 07 00 00 00 19

    00 00 00 13 S E L E C T * F R O M U S E R S 00 04 81 00 00 08 00 00 00 bf 00 00 00 02 00 00 00 01 00 00 00 03 00 0a 6d 79 6b 65 79 73 70 61 63 65 00 05 75 73 65 72 73 00 09 75 73 65 72 5f 6e 61 6d 65 00 0d 00 05 65 6d 61 69 6c 00 0d 00 08 70 61 73 73 77 6f 72 64 00 03 00 00 00 02 00 00 00 04 70 68 69 6c 00 00 00 0d 70 68 69 6c 40 69 6e 74 65 72 2e 6e 65 74 00 00 00 20 5e b6 3b bb e0 1e ee d0 93 cb 22 bb 8f 5a cd c3 00 00 00 03 73 75 65 00 00 00 0d 73 75 65 40 69 6e 74 65 72 2e 6e 65 74 00 00 00 20 32 7b 6f 07 43 58 11 23 9b c4 7e 15 44 35 32 73
  36. #CASSANDRAEU @ICONARA 01 00 00 07 00 00 00 19

    00 00 00 13 53 45 4c 45 43 54 20 2a 20 46 52 4f 4d 20 75 73 65 72 73 00 04 81 00 00 08 00 00 00 bf 00 00 00 02 00 00 00 01 00 00 00 03 00 0a 6d 79 6b 65 79 73 70 61 63 65 00 05 75 73 65 72 73 00 09 75 73 65 72 5f 6e 61 6d 65 00 0d 00 05 65 6d 61 69 6c 00 0d 00 08 70 61 73 73 77 6f 72 64 00 03 00 00 00 02 00 00 00 04 70 68 69 6c 00 00 00 0d 70 68 69 6c 40 69 6e 74 65 72 2e 6e 65 74 00 00 00 20 5e b6 3b bb e0 1e ee d0 93 cb 22 bb 8f 5a cd c3 00 00 00 03 73 75 65 00 00 00 0d 73 75 65 40 69 6e 74 65 72 2e 6e 65 74 00 00 00 20 32 7b 6f 07 43 58 11 23 9b c4 7e 15 44 35 32 73
  37. #CASSANDRAEU @ICONARA 01 00 00 07 00 00 00 19

    00 00 00 13 53 45 4c 45 43 54 20 2a 20 46 52 4f 4d 20 75 73 65 72 73 00 04 81 00 00 08 00 00 00 bf 00 00 00 02 00 00 00 01 00 00 00 03 00 0a 6d 79 6b 65 79 73 70 61 63 65 00 05 75 73 65 72 73 00 09 75 73 65 72 5f 6e 61 6d 65 00 0d 00 05 65 6d 61 69 6c 00 0d 00 08 70 61 73 73 77 6f 72 64 00 03 00 00 00 02 00 00 00 04 70 68 69 6c 00 00 00 0d 70 68 69 6c 40 69 6e 74 65 72 2e 6e 65 74 00 00 00 20 5e b6 3b bb e0 1e ee d0 93 cb 22 bb 8f 5a cd c3 00 00 00 03 73 75 65 00 00 00 0d 73 75 65 40 69 6e 74 65 72 2e 6e 65 74 00 00 00 20 32 7b 6f 07 43 58 11 23 9b c4 7e 15 44 35 32 73
  38. #CASSANDRAEU @ICONARA 01 00 00 07 00 00 00 19

    00 00 00 13 53 45 4c 45 43 54 20 2a 20 46 52 4f 4d 20 75 73 65 72 73 00 04 81 00 00 08 00 00 00 bf 00 00 00 02 00 00 00 01 00 00 00 03 00 0a 6d 79 6b 65 79 73 70 61 63 65 00 05 75 73 65 72 73 00 09 75 73 65 72 5f 6e 61 6d 65 00 0d 00 05 65 6d 61 69 6c 00 0d 00 08 70 61 73 73 77 6f 72 64 00 03 00 00 00 02 00 00 00 04 70 68 69 6c 00 00 00 0d 70 68 69 6c 40 69 6e 74 65 72 2e 6e 65 74 00 00 00 20 5e b6 3b bb e0 1e ee d0 93 cb 22 bb 8f 5a cd c3 00 00 00 03 73 75 65 00 00 00 0d 73 75 65 40 69 6e 74 65 72 2e 6e 65 74 00 00 00 20 32 7b 6f 07 43 58 11 23 9b c4 7e 15 44 35 32 73
  39. #CASSANDRAEU @ICONARA 01 00 00 07 00 00 00 19

    00 00 00 13 53 45 4c 45 43 54 20 2a 20 46 52 4f 4d 20 75 73 65 72 73 00 04 81 00 00 08 00 00 00 bf 00 00 00 02 00 00 00 01 00 00 00 03 00 0a 6d 79 6b 65 79 73 70 61 63 65 00 05 75 73 65 72 73 00 09 u s e r _ n a m e 00 0d 00 05 e m a i l 00 0d 00 08 p a s s w o r d 00 03 00 00 00 02 00 00 00 04 70 68 69 6c 00 00 00 0d 70 68 69 6c 40 69 6e 74 65 72 2e 6e 65 74 00 00 00 20 5e b6 3b bb e0 1e ee d0 93 cb 22 bb 8f 5a cd c3 00 00 00 03 73 75 65 00 00 00 0d 73 75 65 40 69 6e 74 65 72 2e 6e 65 74 00 00 00 20 32 7b 6f 07 43 58 11 23 9b c4 7e 15 44 35 32 73
  40. #CASSANDRAEU @ICONARA 01 00 00 07 00 00 00 19

    00 00 00 13 53 45 4c 45 43 54 20 2a 20 46 52 4f 4d 20 75 73 65 72 73 00 04 81 00 00 08 00 00 00 bf 00 00 00 02 00 00 00 01 00 00 00 03 00 0a 6d 79 6b 65 79 73 70 61 63 65 00 05 75 73 65 72 73 00 09 75 73 65 72 5f 6e 61 6d 65 00 0d 00 05 65 6d 61 69 6c 00 0d 00 08 70 61 73 73 77 6f 72 64 00 03 00 00 00 02 00 00 00 04 70 68 69 6c 00 00 00 0d 70 68 69 6c 40 69 6e 74 65 72 2e 6e 65 74 00 00 00 20 5e b6 3b bb e0 1e ee d0 93 cb 22 bb 8f 5a cd c3 00 00 00 03 73 75 65 00 00 00 0d 73 75 65 40 69 6e 74 65 72 2e 6e 65 74 00 00 00 20 32 7b 6f 07 43 58 11 23 9b c4 7e 15 44 35 32 73
  41. #CASSANDRAEU @ICONARA 01 00 00 07 00 00 00 19

    00 00 00 13 53 45 4c 45 43 54 20 2a 20 46 52 4f 4d 20 75 73 65 72 73 00 04 81 00 00 08 00 00 00 bf 00 00 00 02 00 00 00 01 00 00 00 03 00 0a 6d 79 6b 65 79 73 70 61 63 65 00 05 75 73 65 72 73 00 09 75 73 65 72 5f 6e 61 6d 65 00 0d 00 05 65 6d 61 69 6c 00 0d 00 08 70 61 73 73 77 6f 72 64 00 03 00 00 00 02 00 00 00 04 p h i l 00 00 00 0e p h i l @ i n t e r . n e t 00 00 00 20 5e b6 3b bb e0 1e ee d0 93 cb 22 bb 8f 5a cd c3 00 00 00 03 s u e 00 00 00 0d s u e @ i n t e r . n e t 00 00 00 20 32 7b 6f 07 43 58 11 23 9b c4 7e 15 44 35 32 73
  42. #CASSANDRAEU @ICONARA 01 00 00 07 00 00 00 19

    00 00 00 13 53 45 4c 45 43 54 20 2a 20 46 52 4f 4d 20 75 73 65 72 73 00 04 81 00 00 08 00 00 00 bf 00 00 00 02 00 00 00 01 00 00 00 03 00 0a 6d 79 6b 65 79 73 70 61 63 65 00 05 75 73 65 72 73 00 09 75 73 65 72 5f 6e 61 6d 65 00 0d 00 05 65 6d 61 69 6c 00 0d 00 08 70 61 73 73 77 6f 72 64 00 03 00 00 00 02 00 00 00 04 70 68 69 6c 00 00 00 0d 70 68 69 6c 40 69 6e 74 65 72 2e 6e 65 74 00 00 00 20 5e b6 3b bb e0 1e ee d0 93 cb 22 bb 8f 5a cd c3 00 00 00 03 73 75 65 00 00 00 0d 73 75 65 40 69 6e 74 65 72 2e 6e 65 74 00 00 00 20 32 7b 6f 07 43 58 11 23 9b c4 7e 15 44 35 32 73
  43. #CASSANDRAEU @ICONARA QUERY ERROR

  44. #CASSANDRAEU @ICONARA PREPARE RESULT EXECUTE RESULT EXECUTE RESULT

  45. #CASSANDRAEU @ICONARA 01 00 03 09 00 00 00 2a

    00 00 00 26 53 45 4c 45 43 54 20 2a 20 46 52 4f 4d 20 75 73 65 72 20 57 48 45 52 45 20 75 73 65 72 5f 6e 61 6d 65 20 3d 20 3f 81 00 03 08 00 00 00 3e 00 00 00 04 00 10 ca 48 7f 1e 7a 82 d2 3c 4e 8a f3 35 51 71 a5 2f 00 00 00 01 00 00 00 01 00 0a 6d 79 6b 65 79 73 70 61 63 65 00 05 75 73 65 72 73 00 09 75 73 65 72 5f 6e 61 6d 65 00 0d
  46. #CASSANDRAEU @ICONARA 01 00 03 09 00 00 00 2a

    00 00 00 26 53 45 4c 45 43 54 20 2a 20 46 52 4f 4d 20 75 73 65 72 20 57 48 45 52 45 20 75 73 65 72 5f 6e 61 6d 65 20 3d 20 3f 81 00 03 08 00 00 00 3e 00 00 00 04 00 10 ca 48 7f 1e 7a 82 d2 3c 4e 8a f3 35 51 71 a5 2f 00 00 00 01 00 00 00 01 00 0a 6d 79 6b 65 79 73 70 61 63 65 00 05 75 73 65 72 73 00 09 75 73 65 72 5f 6e 61 6d 65 00 0d
  47. #CASSANDRAEU @ICONARA 01 00 03 09 00 00 00 2a

    00 00 00 26 S E L E C T * F R O M u s e r W H E R E u s e r _ n a m e = ? 81 00 03 08 00 00 00 3e 00 00 00 04 00 10 ca 48 7f 1e 7a 82 d2 3c 4e 8a f3 35 51 71 a5 2f 00 00 00 01 00 00 00 01 00 0a 6d 79 6b 65 79 73 70 61 63 65 00 05 75 73 65 72 73 00 09 75 73 65 72 5f 6e 61 6d 65 00 0d
  48. #CASSANDRAEU @ICONARA 01 00 03 09 00 00 00 2a

    00 00 00 26 53 45 4c 45 43 54 20 2a 20 46 52 4f 4d 20 75 73 65 72 20 57 48 45 52 45 20 75 73 65 72 5f 6e 61 6d 65 20 3d 20 3f 81 00 03 08 00 00 00 3e 00 00 00 04 00 10 ca 48 7f 1e 7a 82 d2 3c 4e 8a f3 35 51 71 a5 2f 00 00 00 01 00 00 00 01 00 0a 6d 79 6b 65 79 73 70 61 63 65 00 05 75 73 65 72 73 00 09 75 73 65 72 5f 6e 61 6d 65 00 0d
  49. #CASSANDRAEU @ICONARA 01 00 03 09 00 00 00 2a

    00 00 00 26 53 45 4c 45 43 54 20 2a 20 46 52 4f 4d 20 75 73 65 72 20 57 48 45 52 45 20 75 73 65 72 5f 6e 61 6d 65 20 3d 20 3f 81 00 03 08 00 00 00 3e 00 00 00 04 00 10 ca 48 7f 1e 7a 82 d2 3c 4e 8a f3 35 51 71 a5 2f 00 00 00 01 00 00 00 01 00 0a 6d 79 6b 65 79 73 70 61 63 65 00 05 75 73 65 72 73 00 09 75 73 65 72 5f 6e 61 6d 65 00 0d
  50. #CASSANDRAEU @ICONARA 01 00 03 09 00 00 00 2a

    00 00 00 26 53 45 4c 45 43 54 20 2a 20 46 52 4f 4d 20 75 73 65 72 20 57 48 45 52 45 20 75 73 65 72 5f 6e 61 6d 65 20 3d 20 3f 81 00 03 08 00 00 00 3e 00 00 00 04 00 10 ca 48 7f 1e 7a 82 d2 3c 4e 8a f3 35 51 71 a5 2f 00 00 00 01 00 00 00 01 00 0a 6d 79 6b 65 79 73 70 61 63 65 00 05 75 73 65 72 73 00 09 75 73 65 72 5f 6e 61 6d 65 00 0d
  51. #CASSANDRAEU @ICONARA 01 00 03 09 00 00 00 2a

    00 00 00 26 53 45 4c 45 43 54 20 2a 20 46 52 4f 4d 20 75 73 65 72 20 57 48 45 52 45 20 75 73 65 72 5f 6e 61 6d 65 20 3d 20 3f 81 00 03 08 00 00 00 3e 00 00 00 04 00 10 ca 48 7f 1e 7a 82 d2 3c 4e 8a f3 35 51 71 a5 2f 00 00 00 01 00 00 00 01 00 0a 6d 79 6b 65 79 73 70 61 63 65 00 05 75 73 65 72 73 00 09 u s e r _ n a m e 00 0d
  52. #CASSANDRAEU @ICONARA 01 00 03 09 00 00 00 2a

    00 00 00 26 53 45 4c 45 43 54 20 2a 20 46 52 4f 4d 20 75 73 65 72 20 57 48 45 52 45 20 75 73 65 72 5f 6e 61 6d 65 20 3d 20 3f 81 00 03 08 00 00 00 3e 00 00 00 04 00 10 ca 48 7f 1e 7a 82 d2 3c 4e 8a f3 35 51 71 a5 2f 00 00 00 01 00 00 00 01 00 0a 6d 79 6b 65 79 73 70 61 63 65 00 05 75 73 65 72 73 00 09 75 73 65 72 5f 6e 61 6d 65 00 0d
  53. #CASSANDRAEU @ICONARA STREAM 0b STREAM 0c STREAM 0d STREAM 0e

    STREAM 07 STREAM 08 STREAM 09 STREAM 0a STREAM 0f STREAM 10 STREAM 06
  54. #CASSANDRAEU @ICONARA STREAM ff EVENT

  55. #CASSANDRAEU @ICONARA THE HARD PART IS NOT THE PROTOCOL

  56. #CASSANDRAEU @ICONARA THE DISTRIBUTED SYSTEM INCLUDES THE CLIENT

  57. #CASSANDRAEU @ICONARA × ×

  58. #CASSANDRAEU @ICONARA I GET BUG REPORTS

  59. #CASSANDRAEU @ICONARA Map: a [short] n indicating the size of

    the map, followed by n entries. Each entry is composed of two [short bytes] representing the key and the value of the entry map.
  60. #CASSANDRAEU @ICONARA RUBY PERFORMANCE (WAIT FOR IT)

  61. #CASSANDRAEU @ICONARA GO WRITE YOUR OWN DRIVERS

  62. #CASSANDRAEU @ICONARA github.com/iconara/cql-rb

  63. #CASSANDRAEU CASSANDRASUMMITEU Theo Hultberg | Chief Architect, Burt Building a

    CQL driver