카카오워크 메시징 엔진의 Rust 교체 개발 사례 from C

↟ সޖਊݫन੷4BB4ࢲ࠺झ ↟ ੷࠺ਊ؀ਊ۝ݫद૑੹࣠ࢿמ ↟ ࢎস҃੬۱ীࢲݒ਋઺ਃ ↟ ୡ׼ݫद૑ߊ࣠ࢿמѐࢶ೙ਃ ஠஠য়ਕ௼

஠஠য়ਕ௼ݫद૚ࢲߡ 8FCTPDLFU HSQD .FTTBHF(BUF 'MJHIU HSQD 1VTI(BUF

↟ $ ↟ *0FWFOUNVMUJQMFYJOHFQPMMࢎਊ೧ࢲUISFBE - QPPMӝ߈SFBDUPS૒੽ҳഅ ↟ 3FBDUPSࢿמ੗୓חաࢁ૑ঋ਺ CPPTUBTJP৬௾ର੉হ਺ ↟
؀ࠗ࠙੄OFUXPSLJPBQJܳCMPDLJOHਵ۽ࢎਊ XFCTPDLFUTFOESFDFJWF HSQDSFRVFTU - SFTQPOTF ↟ CMPDLJOHBQJ਽׹ਸӝ׮ܻחزউUISFBETVTQFOE ↟ HSQDಣӐSFTQPOTFEFMBZNT җࠗೞदNT ↟ UISFBETVTQFOE۽ੋೠࢿמ੷ೞܳழߡೞӝਤ೧ࢲUISFBEQPPMਸ୭؀ѐө૑ࢎਊ ↟ ࢲߡҗࠗೞदBDUJWFUISFBEDPVOUө૑࢚थೞҊ DQVGVMM ↟ TUSFTTUFTUदр೵੸DSBTI ӝઓ'MJHIU

↟ $ ۽ب࠺زӝ*0ҳഅоמ ↟ DBMMCBDLGVODUJPO ↟ ҳઑ੹߈ীܻಖష݂੉೙ਃ೧ࢲҳഅ࠺ਊ੉ݒ਋֫਺ ↟ ੢ӝ੸ਵ۽$ ࣗझ௏٘ਬ૑࠺ਊ੉֫਺
↟ ؀উ਷ ࠺زӝ*0۽੹ജ೧ঠೣ

/FUXPSL*0ࢿמ ؀ਊ۝ݫݽܻ੄ബਯ੸ੋҙܻ .VMUJ - UISFBEউ੿ࢿ ѐߊ
ਬ૑ࠁࣻಞ੄ࢿ ରࣁ؀ fl JHIUҳഅ঱যࢶఖ 3VTU

/BUJWFDPNQJMF঱য $$ زੌೠࣻળ੄ࢿמ /P($ ਬ૑ࠁࣻউ੿ࢿಞ੄ࢿ
TUSPOHUZQFE .FNPSZ4BGFUZ ↟ 0XOFSTIJQ ↟ #PSSPXJOH ↟ .VUBCJMJUZ 3VTU 1SPHSBNNJOH-BOHVBHFBOEDPNQJMFS#FODINBSLT ↟ IUUQT QSPHSBNNJOH - MBOHVBHF - CFODINBSLTWFSDFMBQQSVTU

&BDIWBMVFJO3VTUIBTBWBSJBCMFUIBUsTDBMMFEJUTPXOFS 5IFSFDBOPOMZCFPOFPXOFSBUBUJNF 8IFOUIFPXOFSHPFTPVUPGTDPQF UIFWBMVFXJMMCFESPQQFE 0XOFSTIJQ3VMFT WBMVFחPXFS߸ࣻо೙ਃೞ׮ PXFS߸ࣻחѐ݅ઓ੤ೠ׮
TDPQFਸߩযաݶ WBMVFחESPQػ׮

0XOFSTIJQ struct Student { id: i64, name: String, score: i32,
} fn main() { let student_1 = Student { id: 1, name: String::from(“Robby”), score: 100, }; let student_2 = student_1; println!(“student_1={}”, student_1.name); println!(“student_2={}”, student_2.name); } CPSSPXPGNPWFEWBMVFATUVEFOU@AWBMVFCPSSPXFEIFSFBGUFSNPWF ______________ let student_2 = student_1; 3VMFPXFS߸ࣻחѐ݅ઓ੤ೠ׮

0XOFSTIJQ struct Student { id: i64, name: String, score: i32,
} fn main() { let student = Student { id: 1, name: String::from(“Robby”), score: 100, }; print_score(student); print_score(student); } fn print_score(student: Student) { println!(“name={} score={}”, student.name, student.score); } VTFPGNPWFEWBMVFATUVEFOUAWBMVFVTFEIFSFBGUFSNPWF _______ WBMVFNPWFE

0XOFSTIJQ#PSSPXJOH struct Student { id: i64, name: String, score: i32,
} fn main() { let student = Student { id: 1, name: String::from(“Robby”), score: 100, }; print_score(&student); print_score(&student); } fn print_score(student: &Student) { println!(“name={} score={}”, student.name, student.score); }

"UBOZHJWFOUJNF ZPVDBOIBWFFJUIFSPOFNVUBCMF SFGFSFODFPSBOZOVNCFSPGJNNVUBCMFSFGFSFODFT 3FGFSFODFTNVTUBMXBZTCFWBMJE #PSSPXJOH3VMFT ↟ 3FGFSFODF੄MJGFUJNF਷PXOFS੄MJGFUJNFীನೣغযঠೠ׮ ↟
3VTUDPNQJMFSоSFGFSFODF੄MJGFUJNFਸ୶ۿೡࣻ੓যঠೠ׮

0XOFSTIJQ#PSSPXJOH fn main() { let student = Student { id:
1, name: String::from(“Robby”), score: 100, }; let student_ref_1 = &student; let student_ref_2 = &student; print_score(student_ref_1); print_score(&student); print_score(student_ref_2); } fn print_score(student: &Student) { println!(“name={} score={}”, student.name, student.score); }

#PSSPXJOH.VUBCJMJUZ fn main() { let student = Student { id:
1, name: String::from(“Robby”), score: 100, }; update_score(&student, 90); } fn update_score(student: &Student, score: i32) { student.score = score; } DBOOPUBTTJHOUPATUVEFOUTDPSFA XIJDIJTCFIJOEBAASFGFSFODF TPUIFEBUBJUSFGFSTUPDBOOPUCFXSJUUFO ______________

1, name: String::from(“Robby”), score: 100, }; update_score(&student, 90); } fn update_score(student: &mut Student, score: i32) { student.score = score; } FYQFDUFENVU4UVEFOU GPVOE4UVEFOU _________

1, name: String::from(“Robby”), score: 100, }; update_score(&mut student, 90); } fn update_score(student: &mut Student, score: i32) { student.score = score; } DBOOPUNVUBUFJNNVUBCMFWBSJBCMFATUVEFOUA _____________

#PSSPXJOH.VUBCJMJUZ fn main() { let mut student = Student {
id: 1, name: String::from(“Robby”), score: 100, }; update_score(&mut student, 90); } fn update_score(student: &mut Student, score: i32) { student.score = score; }

1, name: String::from(“Robby”), score: 100, }; let mut student = student; update_score(&mut student, 90); } fn update_score(student: &mut Student, score: i32) { student.score = score; }

id: 1, name: String::from(“Robby”), score: 100, }; let student_ref = &student; print_score(student_ref); update_score(&mut student, 90); print_score(student_ref); } fn update_score(student: &mut Student, score: i32) { student.score = score; } fn print_score(student: &Student) { println!(“name={} score={}”, student.name, student.score); } DBOOPUCPSSPXATUVEFOUABTNVUBCMFCFDBVTFJUJTBMTPCPSSPXFEBTJNNVUBCMF NVUBCMFCPSSPXPDDVSTIFSF __________

id: 1, name: String::from(“Robby”), score: 100, }; let student_ref = &student; print_score(student_ref); update_score(&mut student, 90); print_score(&student); } fn update_score(student: &mut Student, score: i32) { student.score = score; } fn print_score(student: &Student) { println!(“name={} score={}”, student.name, student.score); }

#PSSPXJOH4JOHMF - UISFBE fn init_students() -> HashMap<i32, Student> { let
mut students = HashMap::new(); … students } fn print_students(students: &HashMap<i32, Student>) { … } fn update_students(students: &mut HashMap<i32, Student>) { … } fn foo() { let mut students = init_students(); print_students(&students); update_students(&mut students); print_students(&students); }

#PSSPXJOH.VMUJ - UISFBE fn init_students() -> HashMap<i32, Student> { let
mut students = HashMap::new(); … students } fn print_students(students: &HashMap<i32, Student>) { … } fn update_students(students: &mut HashMap<i32, Student>) { … } fn foo() { let mut students = init_students(); std::thread::spawn(|| { print_students(&students); }); std::thread::spawn(|| { update_students(&mut students); }); print_students(&students); } DMPTVSFNBZPVUMJWFUIFDVSSFOUGVODUJPO CVUJUCPSSPXTATUVEFOUTA

0XOFSTIJQ.VMUJ - UISFBE fn init_students() -> HashMap<i32, Student> { let
mut students = HashMap::new(); … students } fn print_students(students: &HashMap<i32, Student>) { … } fn update_students(students: &mut HashMap<i32, Student>) { … } fn foo() { let mut students = init_students(); std::thread::spawn(move || { print_students(&students); }); std::thread::spawn(move || { update_students(&mut students); }); print_students(&students); } VTFPGNPWFEWBMVFATUVEFOUTA CPSSPXPGNPWFEWBMVFATUVEFOUTA

.VMUJ - UISFBE"SD5 fn init_students() -> HashMap<i32, Student> { let
mut students = HashMap::new(); … students } fn print_students(students: &HashMap<i32, Student>) { … } fn update_students(students: &mut HashMap<i32, Student>) { … } fn foo() { let students = init_students(); let students = Arc::new(students); let students_1 = students.clone(); std::thread::spawn(move || { print_students(&students_1); }); let mut students_2 = students.clone(); std::thread::spawn(move || { update_students(&mut students_2); }); print_students(&students); } DBOOPUCPSSPXEBUBJOBOA"SDABTNVUBCMF

.VMUJ - UISFBE"SD.VUFY5 fn init_students() -> HashMap<i32, Student> { let
mut students = HashMap::new(); … students } fn print_students(students: &HashMap<i32, Student>) { … } fn update_students(students: &mut HashMap<i32, Student>) { … } fn foo() { let students = init_students(); let students = Mutex::new(students); let students = Arc::new(students); let students_1 = students.clone(); std::thread::spawn(move || { let read_locked_students = students_1.lock().unwrap(); print_students(&read_locked_students); }); let students_2 = students.clone(); std::thread::spawn(move || { let mut write_locked_students = students_2.lock().unwrap(); update_students(&mut write_locked_students); }); print_students(&students.lock().unwrap()); }

async fn fetch_user(id: i64) -> Result<User, NetworkError> { … }
async fn fetch_user_profile_image(id: i64) -> Result<Image, NetworkError> { let user = fetch_user(id).await?; fetch_profile_image(user.profile_image_url) } BTZODBXBJU

3VTUZ'MJHIUXPSLUJNFMJOF
4BOECPY2" 4USFTTUFTU ↟ ࢿמ୭੸ച ↟ ܻಖష݂ ഥ ↟ EFBEMPDL ↟ DSBTI ↟ DSBTI ѐߊୡӝपࣻBTTFSU ઱݅ীߣഐ୹ػBQJߡӒ ↟ BSSBZCPVOEFSSPS ৻ࠗMJCSBSZߡӒ ࣁࠗӝמBQJҳഅ ↟ XFCTPDLFUBQJ ↟ SFTUBQJ ↟ HSQD ↟ fl JHIUDMVTUFSBQJ 3VTU fl JHIUѐߊद੘ BQQTLFMFUPO ↟ -PHJO ↟ .FTTBHF3FMBZ ↟ 3VTU೟ण $#52" QBSUJBMQSPEVDUJPO ਘੌ 1SPEVDUJPO ↟ ӝઓ$ 'MJHIU࠙ࢳ ↟ ࢿמపझ౟ ↟ 3VTU೟ण

"WFSBHF$16VTBHF

4UBDLPWFS fl PX%FWFMPQFSTVSWFZ 5IFNPTUBENJSFE MPWFE MBOHVBHF ↟3VTU ↟3VTU ↟3VTU ↟3VTU
↟3VTU ↟3VTU ↟3VTU ↟ 3VTU

3VTUJOQSPEVDUJPO .JDSPTPGU (PPHMF "84 $MPVE fl BSF %JTDPSE OQNKTDPN ↟
CJMMJPOQBDLBHFEPXOMPBEQFSEBZ ↟ 3VTUOQN8IJUFQBQFS 9 UXJUFS ↟ GSPN(PUP3VTU

카카오워크 메시징 엔진의 Rust 교체 개발 사례 from C

카카오워크 메시징 엔진의 Rust 교체 개발 사례 from C

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↟ সޖਊݫन੷4BB4ࢲ࠺झ ↟ ੷࠺ਊ؀ਊ۝ݫद૑੹࣠ࢿמ ↟ ࢎস҃੬۱ীࢲݒ਋઺ਃ ↟ ୡ׼ݫद૑ߊ࣠ࢿמѐࢶ೙ਃ ஠஠য়ਕ௼

஠஠য়ਕ௼ݫद૚ࢲߡ 8FCTPDLFU HSQD .FTTBHF(BUF 'MJHIU HSQD 1VTI(BUF

↟ $ ↟ *0FWFOUNVMUJQMFYJOHFQPMMࢎਊ೧ࢲUISFBE - QPPMӝ߈SFBDUPS૒੽ҳഅ ↟ 3FBDUPSࢿמ੗୓חաࢁ૑ঋ਺ CPPTUBTJP৬௾ର੉হ਺ ↟

↟ $ ۽ب࠺زӝ*0ҳഅоמ ↟ DBMMCBDLGVODUJPO ↟ ҳઑ੹߈ীܻಖష݂੉೙ਃ೧ࢲҳഅ࠺ਊ੉ݒ਋֫਺ ↟ ੢ӝ੸ਵ۽$ ࣗझ௏٘ਬ૑࠺ਊ੉֫਺

/FUXPSL*0ࢿמ ؀ਊ۝ݫݽܻ੄ബਯ੸ੋҙܻ .VMUJ - UISFBEউ੿ࢿ ѐߊ

/BUJWFDPNQJMF঱য $$ زੌೠࣻળ੄ࢿמ /P($ ਬ૑ࠁࣻউ੿ࢿಞ੄ࢿ

&BDIWBMVFJO3VTUIBTBWBSJBCMFUIBUsTDBMMFEJUTPXOFS 5IFSFDBOPOMZCFPOFPXOFSBUBUJNF 8IFOUIFPXOFSHPFTPVUPGTDPQF UIFWBMVFXJMMCFESPQQFE 0XOFSTIJQ3VMFT WBMVFחPXFS߸ࣻо೙ਃೞ׮ PXFS߸ࣻחѐ݅ઓ੤ೠ׮

0XOFSTIJQ struct Student { id: i64, name: String, score: i32,

0XOFSTIJQ struct Student { id: i64, name: String, score: i32,

0XOFSTIJQ#PSSPXJOH struct Student { id: i64, name: String, score: i32,

"UBOZHJWFOUJNF ZPVDBOIBWFFJUIFSPOFNVUBCMF SFGFSFODFPSBOZOVNCFSPGJNNVUBCMFSFGFSFODFT 3FGFSFODFTNVTUBMXBZTCFWBMJE #PSSPXJOH3VMFT ↟ 3FGFSFODF੄MJGFUJNF਷PXOFS੄MJGFUJNFীನೣغযঠೠ׮ ↟

0XOFSTIJQ#PSSPXJOH fn main() { let student = Student { id:

#PSSPXJOH.VUBCJMJUZ fn main() { let student = Student { id:

#PSSPXJOH.VUBCJMJUZ fn main() { let student = Student { id:

#PSSPXJOH.VUBCJMJUZ fn main() { let student = Student { id:

#PSSPXJOH.VUBCJMJUZ fn main() { let mut student = Student {

#PSSPXJOH.VUBCJMJUZ fn main() { let student = Student { id:

#PSSPXJOH.VUBCJMJUZ fn main() { let mut student = Student {

#PSSPXJOH.VUBCJMJUZ fn main() { let mut student = Student {

#PSSPXJOH4JOHMF - UISFBE fn init_students() -> HashMap<i32, Student> { let

#PSSPXJOH.VMUJ - UISFBE fn init_students() -> HashMap<i32, Student> { let

0XOFSTIJQ.VMUJ - UISFBE fn init_students() -> HashMap<i32, Student> { let

.VMUJ - UISFBE"SD5 fn init_students() -> HashMap<i32, Student> { let

.VMUJ - UISFBE"SD.VUFY5 fn init_students() -> HashMap<i32, Student> { let

async fn fetch_user(id: i64) -> Result<User, NetworkError> { … }

3VTUZ'MJHIUXPSLUJNFMJOF

"WFSBHF$16VTBHF

4UBDLPWFS fl PX%FWFMPQFSTVSWFZ 5IFNPTUBENJSFE MPWFE MBOHVBHF ↟3VTU ↟3VTU ↟3VTU ↟3VTU

3VTUJOQSPEVDUJPO .JDSPTPGU (PPHMF "84 $MPVE fl BSF %JTDPSE OQNKTDPN ↟

2"

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