This document summarizes RON (Replicated Object Notation) and compares it to JSON for use in syncing data. It argues that while JSON is easy to read, RON has advantages over JSON for syncing due to its support for typing, identity, versioning and addressing which enable conflict-free replication. The document explores these concepts through examples and discusses how RON is based on CRDTs which allow for conflict-free replicated data types.

1. RON: REPLICATED OBJECT NOTATION
WHY JSON IS NOT SO GOOD (FOR SYNC)
VICTOR GRISHCHENKO, PHD
REACTIVE CONF 2017, BRATISLAVA

2. PROOF
SYNC IS HARD, JSON IS EASY
▸ Contradiction
*db#test$srvr@)1-client:)2+srvr!.
#)3+client!.
*lww#)3+client@)3+client!:a'b'.
*db#test$srvr@)1-client
:EOF$~~~~~~~~~~!.

3. TYPING
{
“MANUFACTURER” : “FORD MOTOR CO”,
“ENGINE”: “2.0L 150 PS DURATORQ I4”,
“BODY”: “5-DOOR LIFTBACK”
}

4. AIVDM
!AIVDM,1,1,,B,177KQJ5000G?
TO`K>RA1WUBN0TKH,0*5C
!AIVDM,1,1,,A,38Id705000rRVJhE7cl9n;160000,0*40
!AIVDM,1,1,4,B,6>jR0600V:C0>da4P106P00,2*02
!AIVDM,2,1,6,A,8>qc9wiKf>d=Cq5r0mdew:?
DLq>1LmhHrsqmBCKnJ50,0*30
!AIVDM,2,2,6,A,3OLc=UCRp,0*4A,b003660465

5. IDENTITY
{
“ID”: “CD391”,
“MANUFACTURER” : “FORD MOTOR CO”,
“ENGINE”: “2.0L 150 PS DURATORQ I4”,
“BODY”: “5-DOOR LIFTBACK”
}

6. IDENTITY
ADS-B MODE S
8D40621D58C382D690C8AC2863A7
8D40621D58C386435CC412692AD6
| | ICAO24 | DATA | CRC |
|----|--------|----------------|--------|
| 8D | 40621D | 58C382D690C8AC | 2863A7 |
| 8D | 40621D | 58C386435CC412 | 692AD6 |
| DATA |
|===================================================================================|
| TC | SS | NICsb | ALT | T | F | CPR-LAT | CPR-LON |
|-------|----|-------|--------------|---|---|-------------------|-------------------|
| 01011 | 00 | 0 | 110000111000 | 0 | 0 | 10110101101001000 | 01100100010101100 |
| 01011 | 00 | 0 | 110000111000 | 0 | 1 | 10010000110101110 | 01100010000010010 |

7. VERSIONING
{
“ID”: “CD391”,
“MANUFACTURER” : “FORD MOTOR CO”,
“ENGINE”: “2.0L 150 PS DURATORQ I4”,
“BODY”: “5-DOOR LIFTBACK”,
“PLATFORM”: “???”
}
{
“ID”: “CD391”,
“MANUFACTURER” : “FORD MOTOR CO”,
“ENGINE”: “2.0L 150 PS DURATORQ I4”,
“BODY”: “5-DOOR LIFTBACK”,
“NAME”: “FORD FUSION”,
“ASSEMBLY”, “VALENCIA”,
“PLATFORM”: “CD4”
}

8. VERSIONING
GIT
00887217a7c7e582c46cec22a130adf4b9d7d950fba0 HEAD0multi_ack thin-pack
side-band ofs-delta shallow no-progress include-tag
00441d3fcd5ced445d1abc402225c0b8a1299641f497 refs/heads/integration
003f7217a7c7e582c46cec22a130adf4b9d7d950fba0 refs/heads/master
003cb88d2441cac0977faf98efc80305012112238d9d refs/tags/v0.9
003c525128480b96c89e6418b1e40909bf6c5b2d580f refs/tags/v1.0
003fe92df48743b7bc7d26bcaabfddde0a1e20cae47c refs/tags/v1.0^{}
0000
…
0032want 0a53e9ddeaddad63ad106860237bbf53411d11a7
0032have 441b40d833fdfa93eb2908e52742248faf0ee993
0000

10. 128
2

12. CRDT
CONFLICT-FREE
REPLICATED
DATA
TYPES

14. STATE-CHANGE
DUALITY

16. RON
RON/JSON COMPARISION
JSON RON
Typing ✘ ✔
Identity ✘ ✔
Versioning ✘ ✔
Addressing ✘ ✔
“Readable” ✔ ✘

17. THANKS!
@GRITZKO