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Realm advanced topics and demo
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June 12, 2017
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Transcript
Part 3: Advanced topics and demo Leonardo YongUk Kim (
[email protected]
)
• MVCC (RMD) • Zero Copy (RMD) • Event Handling
(RMD + RMP) • RMP Demo (RMP)
MVCC: Multi Version Concurrency Control
ݒ B+ ܻ৬ MVCC • ݒ B+ ܻܳ
ஸۢ ӝળਵ۽ ҳࢿ. • ߸҃ ࢎ೦ਸ MVCC(Multi Version Concurrency Control)۽ ҙܻ.
ݒ B+ ܻ … ప࠶ ܖ ஸۢਵ۽ࠗఠ ؘఠ
ਫ਼Ӭ݅ਃ? ৵ ஸۢࠗఠભ? … ప࠶ ܖ ஸۢਵ۽ࠗఠ ؘఠ
ੋؙझ ܴ ݫੌ ചߣഐ 1 ٣ܻয়
[email protected]
1004 2
[email protected]
1005 3 ѱஎ
[email protected]
1006 4 ш
[email protected]
1007
ੋؙझ ܴ ݫੌ ചߣഐ 1 ٣ܻয়
[email protected]
1004 2
[email protected]
1005 3 ѱஎ
[email protected]
1006 4 ш
[email protected]
1007 ܴਵ۽ ઑഥ೮णפ.
ੋؙझ ܴ ݫੌ ചߣഐ 1 ٣ܻয়
[email protected]
1004 2
[email protected]
1005 3 ѱஎ
[email protected]
1006 4 ш
[email protected]
1007 ాੋ ؘఋ߬झח ೠ ঀ פ. -> நए झ
ੋؙझ ܴ ݫੌ ചߣഐ 1 ٣ܻয়
[email protected]
1004 2
[email protected]
1005 3 ѱஎ
[email protected]
1006 4 ш
[email protected]
1007 ೠ ঀ ೞݶ ਊ ݏ ঋইࢲ ಁ٬ب ֍যঠ פ.
ੋؙझ ܴ ݫੌ ചߣഐ 1 ٣ܻয়
[email protected]
1004 2
[email protected]
1005 3 ѱஎ
[email protected]
1006 4 ш
[email protected]
1007 ೠঀ ೞݶ நएਯ ֫Ҋ ಁ٬ ਃহযਃ.
ߡ زदઁয(MVCC) A B C D F G E H
I ߡ 1 Root
ॳӝ ے࣌ ࢜ झշࢫਸ ٟ݅פ. A B C D F
G E H I E’ H’ C’ A’ Root ߡ 2
ॳӝ ীب ੍ӝо оמפ. A B C D F G
E H I E’ H’ C’ A’ ߡ 2 ॳӝ ߡ 1 ੍ӝ
੍ӝח ߓఋ ঋणפ. A B C D F G E
H I E’ H’ C’ A’ ߡ 2 ॳӝ ਬ 2: ߡ 1 ੍ӝ ਬ 1: ߡ 1 ੍ӝ
উפ A B C D F G E H I
E’ C’ A’ Root ߡ 1 ࢿ ܻૉ ߊࢤ ߡ 1 উ ನੋఠب ৈ ߡ 1ਵ۽
пӝ ܲ झۨ٘ ۽ஸਸ оפ. A B C D F
G E H I E’ H’ C’ A’ ਬ 3:ߡ 2 ॳӝ ਬ 2: ߡ 1 ੍ӝ ਬ 1: ߡ 1 ੍ӝ झۨ٘ ۽ஸ 1: ߡ 1 झۨ٘ ۽ஸ 2: ߡ 1 झۨ٘ ۽ஸ 3: ߡ 1 -> 2
ഒۆझ۞ ࣻ ח झۨ٘ ۽ஸ • ߓఋ ঋѱ ബਯਵ۽ ੍ӝ,
ॳӝܳ ೞӝ ਤ೧ ݫఋ ؘఠܳ झۨ٘ ױਤ۽ . • ݫݽܻ ݗਵ۽ োѾػ ؘఠח ݣ౭ झۨ٘۽ ҕਬغҊ . • ݅ झۨ٘ ۽ஸ۽ ৌܽ Realm, RealmList, RealmResults, RealmObject ёܳ ܲ झۨ٘۽ ׳ೡ ࣻ হ. • ܲ झۨ٘ীࢲ ௪ܻܳ ೞݶ ݣ౭ झۨ٘ ܐ ҕਬ ؋ী ߄۽ ੍.
Zero copy
җѢ ಕझ࠘ জ ޙઁ • JSON ੋ٬җ ٣٬ী ݆ ܻࣗझܳ
ೲ࠺. • ࢎਊغ ঋ ؘఠب ٣٬ਸ ೧ࢲ Java ёী ওযঠ ೣ. • ೧Ѿ଼: ҳӖ FlatBuffersܳ ॳ.
ాੋ ࣻച (Hydrate) • ؘఠ߬झীࢲ ܐܳ ޙৌա ӝఋ ੋ٬ ػ
ഋక۽ оઉ২פ. • य ٣٬ਸ ೧ࢲ оઉৡ ؘఠܳ ކٶ Java ёী ইસפ.
CPU৬ ݫݽܻܳ խ࠺ೞח ࣻച • ؘఠ߬झীࢲ ܐܳ ޙৌա ӝఋ ੋ٬ػ
ഋక۽ оઉ২פ. • ॳب ঋ ؘఠب оઉয়Ҋ ߸ജө Ѣଢ଼যਃ. • य ٣٬ਸ ೧ࢲ оઉৡ ؘఠܳ ކٶ Java ё ٘ ই સפ. • ॳب ঋਸ ؘఠܳ ࠗ द ߸ജೞҊ ކٶ ٘ী ওযਃ.
FlatBuffers • Facebook জীࢲ FlatBuffers (Google)ਸ بੑೞৈ ਬݺ೧.
Zero copy public long id() { int o = __offset(4);
return o != 0 ? bb.getLong(o + bb_pos) : 0; } public String name() { int o = __offset(6); return o != 0 ? __string(o + bb_pos) : null; } ByteBuffer bb = ByteBuffer.wrap(bytes); MyObject obj = MyObject.getRootAsMyObject(bb); long id = obj.id(); String name = obj.name();
• Realmب Zero copy അ rowী ೠ ࠁ ஸۢҗ ۽
ੋؙझী null ޙৌਸ पઁ ؘఠо ӟ ప࠶ ۽৬ ஸۢਸ ਊ೧ࢲ झ݂ਸ оҊ ১
• RealmProxyObject name setName getName RealmObject realmGet$name realmSet$name RealmProxyObject •
Annotation Processing Tool সਸ न೧સפ.
Event Handling
ؘఠ ܴ݅ ࢤпೞۄ. 1. ۄب ߮ ӝ߈ ۽Ӓې߁. 2. ࢲߡ
ࢎ٘(RMP)ب ߮ ӝ߈ ۽Ӓې߁. ۄ ؘఠ ߸҃ ࢲߡ ࢎ٘ ؘఠ ߸҃ ࢲߡ ೩ٜ۞ ഐ ۄ ೩ٜ۞ ഐ
ۄ ؘఠ ߸҃ ࢲߡ ࢎ٘ ؘఠ ߸҃ ࢲߡ ೩ٜ۞ ഐ
ۄ ೩ٜ۞ ഐ
ۄ ؘఠ ߸҃ ࢲߡ ࢎ٘ ؘఠ ߸҃ ࢲߡ ೩ٜ۞ ഐ
ۄ ೩ٜ۞ ഐ
Good bye REST!
RMP Demo
None
Code
জ ࣗѐ (Scanner)
ࢎա ଼ਸ झப೧ࢲ
IBM Watson ࢲ࠺झܳ ج۰ࢲ…
೧ࢳػ Ѿҗܳ ߈ജפ.
None
ࢎਊо ࢎਸ ନणפ.
۽ஸ DBী زӝചؾפ.
۽ஸ DB৬ ࢲߡо زӝച
ࢲߡ ߮ ೩ٜ۞о ৌ݀פ
߮ ೩ٜ۞о ৲टী ܳ ׳פ.
৲ट ܳ ࠙ࢳפ -_-b
ܻ Ѿҗо ߮ ೩ٜ۞ীѱ ܻఢ
߮ ೩ٜ۞о DBܳ সؘ פ
ࢲߡ৬ ۽ஸ DBо زӝച
ۄ ߸҃ ܻझց ഐغҊ UIܳ јनפ
Scanner জ ࣗ https://github.com/realm-demos/realm-scanner
[email protected]
ݽ؛ Scanner, Swift
None
nullਸ ೲਊೞ ঋणפ.
?۽ աח ఋੑ null ೲਊ
ݽ؛ Scanner, Java
None
RealmObject ёܳ ࢚ࣘ.
nullਸ ೲਊೞ ঋח ٘.
ળ getters/setters ࣻח ইתפ.
ੋૐ (Java)
None
ই٣, ಁझਕ٘ܳ ׳೧ࢲ SyncCredetialsܳ ٟ݅פ.
۽Ӓੋ
ੋૐ ࢲߡ ҃۽
ࢿҕ
Realm ࢸ
ؘఠ ߬झ ҃۽
Realm ੋझఢझ
Realm ੋझఢझܳ ੜ ײद. (ۨಌ۠झ )
ੋૐ (Swift)
۽Ӓੋਸ פ.
Realm ࢸ
Realm ੋझఢझ
নೠ ੋૐ (Java)
None
নೠ ੋૐ (Swift)
None
ॳӝ
None
ॳӝী݅ ے࣌ ࢤࢿ
ݽ؛ਸ ਊೞৈ ੋझఢझ ࢤࢿ
Scan ੋझఢझ ࢚క ࣻ
߸҃ ҙܻܳ ਤೠ ߮ ܻझց ١۾ ࢲߡա জ ܲ ࠗ࠙ীࢲ
ؘఠо ߸҃غਸ ٸ ܻझցܳ ഐ. (iOS ҃ীח Key-Value Observationب ਗ.)
੍ӝ
ё оઉয়ӝ
ఠ݂җ ۳
߸҃ ঌܿ (Java)
߸҃ػ ёо ੋ۽ ׳ؽ.
߸҃ ঌܿ (Swift)
iOS ળ Key-Value Observation
߸҃ ঌܿ (ࢲߡ)
None
ࢲߡ ߮ ೩ٜ۞ܳ ٜ݅ ٸח ѐ షਸ ਊ೧ࢲ ۽Ӓੋ.
ߑӘ ݅ٚ admin_user৬ NOTIFIER_PATH ҃۽, ࢚ױ ߔਵ۽ ܻझցܳ ١۾.
change_event নೠ ࣘࢿਸ ਊ.
Realm ੋझఢझ
ੌ۲ ࢚ ё.
ੋؙझо ୶о, ઁ, ߸҃ ਵ۽ ࣁೞѱ ׳. Fine-grained notifications.
Thank you
[email protected]
realm.io/kr
[email protected]