Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
BFF Antipattern
Search
Sponsored
·
Ship Features Fearlessly
Turn features on and off without deploys. Used by thousands of Ruby developers.
→
Yosuke Furukawa
PRO
June 07, 2018
Programming
7
15k
BFF Antipattern
2018/06/07 に発表した BFF アンチパターンの話です。
Yosuke Furukawa
PRO
June 07, 2018
Tweet
Share
More Decks by Yosuke Furukawa
See All by Yosuke Furukawa
デザインシステムが必須の時代に
yosuke_furukawa
PRO
2
200
Node.js, Deno, Bun 最新動向とその所感について
yosuke_furukawa
PRO
10
4.9k
Welcome JSConf.jp 2024
yosuke_furukawa
PRO
1
4.5k
tc39 x jsconf.jp Panel Discussion 2024
yosuke_furukawa
PRO
0
300
Removing Corepack
yosuke_furukawa
PRO
9
1.8k
JavaScript Runtime とはなにか
yosuke_furukawa
PRO
15
3k
Strip Types と Storage
yosuke_furukawa
PRO
4
470
Module Harmony について
yosuke_furukawa
PRO
4
1.8k
LTのやり方
yosuke_furukawa
PRO
16
2.9k
Other Decks in Programming
See All in Programming
Package Management Learnings from Homebrew
mikemcquaid
0
230
AI時代の認知負荷との向き合い方
optfit
0
160
Claude Codeと2つの巻き戻し戦略 / Two Rewind Strategies with Claude Code
fruitriin
0
140
Best-Practices-for-Cortex-Analyst-and-AI-Agent
ryotaroikeda
1
110
AI Agent の開発と運用を支える Durable Execution #AgentsInProd
izumin5210
7
2.3k
20260127_試行錯誤の結晶を1冊に。著者が解説 先輩データサイエンティストからの指南書 / author's_commentary_ds_instructions_guide
nash_efp
1
990
humanlayerのブログから学ぶ、良いCLAUDE.mdの書き方
tsukamoto1783
0
200
[KNOTS 2026登壇資料]AIで拡張‧交差する プロダクト開発のプロセス および携わるメンバーの役割
hisatake
0
300
ぼくの開発環境2026
yuzneri
0
240
余白を設計しフロントエンド開発を 加速させる
tsukuha
7
2.1k
AtCoder Conference 2025
shindannin
0
1.1k
AIによる開発の民主化を支える コンテキスト管理のこれまでとこれから
mulyu
3
470
Featured
See All Featured
jQuery: Nuts, Bolts and Bling
dougneiner
65
8.4k
How to make the Groovebox
asonas
2
1.9k
Measuring & Analyzing Core Web Vitals
bluesmoon
9
760
The Cost Of JavaScript in 2023
addyosmani
55
9.5k
Principles of Awesome APIs and How to Build Them.
keavy
128
17k
How to Ace a Technical Interview
jacobian
281
24k
A better future with KSS
kneath
240
18k
Everyday Curiosity
cassininazir
0
130
[RailsConf 2023 Opening Keynote] The Magic of Rails
eileencodes
31
9.9k
Self-Hosted WebAssembly Runtime for Runtime-Neutral Checkpoint/Restore in Edge–Cloud Continuum
chikuwait
0
340
The MySQL Ecosystem @ GitHub 2015
samlambert
251
13k
So, you think you're a good person
axbom
PRO
2
1.9k
Transcript
BFFΞϯνύλʔϯ UIT in LINE
Twitter: @yosuke_furukawa Github: yosuke-furukawa
!*5Ͱ#''ͷهࣄΛॻ͍ͯ·͢ɻ
BFF is … • Backend For Frontends #SPXTFS #'' .JDSP4FSWJDF
.JDSP4FSWJDF .JDSP4FSWJDF
None
༁όοΫΤϯυͱϑϩϯτΤϯυΛ͚Δࣄͦͷ ͷ͕Ξϯνύλʔϯ
BFFΞϯνύλʔϯ
BFFΛ2࣮ؒફͯ͠ ࣮ࡍʹؕͬͨ ΞϯνύλʔϯΛհ
͡Ίʹ ॻ͍ͯͯBFFΞϯνύλʔϯ ͱ͍͏͔৫Ξϯνύλʔϯ Έ͍ͨʹͳͬͯ͠·ͬͨ
ΤϯδχΞ৫ͷট • Chapter 5-6: ৫ઃܭͱΞʔΩςΫνϟ ࣮ͷͱ͜ΖγεςϜΞʔΩςΫνϟͱ ৫ઃܭຊ࣭తʹಉ͡ͷͰ͋Δɻ
BFF ϑϩϯτΤϯυͱόο ΫΤϯυͷՍ͚ڮͰ͋Γɺ ৫ͷ߹
BFFΞϯνύλʔϯ ͦͷ1 εύʔείϛϡχέʔγϣϯ
BFFΞʔΩςΫνϟಉ͕࢜ ૄʹͳΔ͕ɺ ίϛϡχέʔγϣϯ·Ͱૄ(sparse) ʹͳͬͯ͠·͏έʔε
None
ྫ1: ςʔϒϧؙݟ͑ API JE OBNF BHF
#'' .JDSP4FSWJDF .JDSP4FSWJDF .JDSP4FSWJDF \ pSTU@OBNFGPP MBTU@OBNFCBS SPMFIPHF
SPMFGVHB ^
#'' .JDSP4FSWJDF .JDSP4FSWJDF .JDSP4FSWJDF \ pSTU@OBNFGPP MBTU@OBNFCBS SPMFIPHF
SPMFGVHB ^ %#ͷεΩʔϚ͕ಁ͚ͯݟ͑Δʂʂʂʂ
SELECTจ͕ಁ͚ͯݟ͑Δɻ ୯७ͳέʔεͳΒͦΕͰྑ͍͕ɺ snake => camelͷมJOIN͠ ͨεΩʔϚ͕ͦͷ··ݟ͑ͯΔͷ NGɻɻɻ
ྫ2: N+1 Query API
#'' .JDSP4FSWJDF .JDSP4FSWJDF .JDSP4FSWJDF JET< > VTFST<\
JE OBNFGPP ^ \ JE OBNFCBS ^>
#'' .JDSP4FSWJDF .JDSP4FSWJDF .JDSP4FSWJDF JET< > /ճΫΤϦʔ͛ͯΔɻɻɻɻ
VTFS\ JE OBNFCBS ^ VTFS\ JE OBNFCBS ^ VTFS\ JE OBNFCBS ^ VTFS\ JE OBNFCBS ^ VTFS\ JE OBNFCBS ^ VTFS\ JE OBNFGPP ^
ϚΠΫϩαʔϏε͔ͩΒͱ͍ͬͯ APIΛ؆ૉʹ͍͍ͯ͠༁͡Όͳ͍ɻ ݁Ռ:1ϖʔδදࣔ͢Δͷʹ3secͱ ͔͔͔Δ
શ෦ίϛϡχέʔγϣϯΛͪΌ Μͱऔͬͯͳ͍͔Βى͖Δ • όοΫΤϯυBFF͔ͩΒͱݴͬͯϏδωεϩ δοΫαʔόαΠυʹ͋ΔͷΛΕͳ͍Ͱཉ͠ ͍ʢαϘΒͳ͍Ͱ͘Εʣ • ϑϩϯτΤϯυͲ͏͍͏API͕΄͍͠ͷ͔ͪΌ ΜͱόοΫΤϯυʹཁٻ͢ΔΑ͏ʹͯ͠ཉ͍͠ ʢΩϟϝϧ͕ཉ͍͠ͱ͔͜͜arrayͰ΄͍͠ͱ͔
ͪ͜ΒଆͰͪΌΜͱݴ͏͖ʣ
શ෦ίϛϡχέʔγϣϯΛͪΌ Μͱऔͬͯͳ͍͔Βى͖Δ • όοΫΤϯυBFF͔ͩΒͱݴͬͯϏδωεϩ δοΫαʔόαΠυʹ͋ΔͷΛΕͳ͍Ͱ ཉ͍͠ • ϑϩϯτΤϯυͲ͏͍͏API͕΄͍͠ͷ͔ ͪΌΜͱόοΫΤϯυʹཁٻ͢ΔΑ͏ʹͯ͠ ཉ͍͠
ΞʔΩςΫνϟૄͰؔରͰ͋Γɺ ίϛϡχέʔγϣϯີͰͳ͚ΕͳΒͳ͍
ΒͲ͏ͯ͠Δ͔
ΒͲ͏ͯ͠Δ͔
ϑϩϯτΤϯυͱόοΫΤϯ υͷର͢ΔͨΊͷϞοΫαʔ όΛ࡞ΓɺೝࣝᴥᴪΛੜ ·ͳ͍Α͏ʹ͍ͯ͘͠ɻ
None
BFFΞϯνύλʔϯ ͦͷ2 ΠϯϑϥϨεϙϯγϏϦςΟ
BFFϑϩϯτΤϯυͷͨΊͷαʔ όͳͷʹɺΠϯϑϥɾӡ༻όοΫ Τϯυʹԡ͚ͯ͠͠·͏έʔε
Πϯϑϥɾӡ༻ #SPXTFS #'' .JDSP4FSWJDF .JDSP4FSWJDF .JDSP4FSWJDF ͦͦ͜ͷαʔό୭͕ ݟΔͷʁϑϩϯτʁόοΫ Τϯυʁ
Πϯϑϥɾӡ༻ #SPXTFS #'' .JDSP4FSWJDF .JDSP4FSWJDF .JDSP4FSWJDF ৽͍͠ͷΛ࡞Δͷʹӡ༻ όοΫΤϯυͤʁ
A. શһ
Πϯϑϥɾӡ༻ • ӡ༻ͳΜͯͲ͔͚͕ͬͪͩ͢ΔΑ͏ͳΜ͡Όͳ ͍ • ϑϩϯτ։ൃ͢ΔͳΒαʔϏεͷোʹහײ ʹͳΔ͖ͩ͠ɺམͪͨΓͨ͠ΒݟΕΔΑ͏ʹͳ Δ͖ • όοΫΤϯυϑϩϯτͷίʔυ͕Θ͔Βͳ͍͔
Βͱݴͬͯܟԕͪ͠Ό͍͚ͳ͍
Πϯϑϥɾӡ༻ • ӡ༻ͳΜͯͲ͔͚͕ͬͪͩ͢ΔΑ͏ͳΜ͡Όͳ ͍ • ϑϩϯτ։ൃ͢ΔͳΒαʔϏεͷোʹහײ ʹͳΔ͖ͩ͠ɺམͪͨΓͨ͠ΒݟΕΔΑ͏ʹͳ Δ͖ • όοΫΤϯυϑϩϯτͷίʔυ͕Θ͔Βͳ͍͔
Βͱݴͬͯܟԕͪ͠Ό͍͚ͳ͍ ϑϩϯτΤϯυͱόοΫΤϯυʹ͚͔ͨΒͱݴͬͯαʔ ϏεҰͭɻαʔϏεͷ࣭Λ্͛Δͷશһٿ
BFFΞϯνύλʔϯ ͦͷ3 ϏοάόϯδϣΠϯτ
࠷ޙͷ࠷ޙʹͳ͔ͬͯΒόοΫΤϯ υͱϑϩϯτΤϯυΛ݁߹͢Δͱ େମࢮ͵
Πϯϑϥɾӡ༻ #SPXTFS #'' .JDSP4FSWJDF .JDSP4FSWJDF .JDSP4FSWJDF ϑϩϯτΤϯυNPDL"1* Ͱಈ͍ͯΔΑ͏ʹͳ͖ͬͯ ͨɻ
Πϯϑϥɾӡ༻ #SPXTFS #'' .JDSP4FSWJDF .JDSP4FSWJDF .JDSP4FSWJDF όοΫΤϯυఆ͍ͯ͠ ΔϦΫΤετύε͢ΔΑ ͏ʹͳͬͨɻ
ظؒ͋ͱͪΐͬͱɺ࠷ޙͷ࠷ޙʹ ݁߹ͩʂʂʂʂ
ʊਓਓਓਓਓਓʊ ʼɹવͷࢮɹʻ ʉ^Y^Y^Y^Y^ʉ
ϏοάόϯδϣΠϯτ • ઈରʹAPIͷϦΫΤετɾϨεϙϯεఆ௨ Γ͡Όͳ͍ɻ • ࣮֬ʹఆ֎ͷى͖Δɻ • ϦΫΤετͷܕ͕string, integer, Ϩεϙϯεͷ
status code͕ҧ͏ etc
ΒͲ͏ͯ͠Δ͔
+ Proxy
ग़དྷ͍ͯΔͱ͜Ζ͔Βঃʑʹ ຊʹ͍ͯ͘͠ #SPXTFS #'' 3FBM.JDSP4FSWJDF .PDL 'BLF .PDL 'BLF
ग़དྷ͍ͯΔͱ͜Ζ͔Βঃʑʹ ຊʹ͍ͯ͘͠ #SPXTFS #'' 3FBM.JDSP4FSWJDF .PDL 'BLF .PDL 'BLF ͋Δఔϑϩϯτઌߦͯ͠ɺը໘Λঃʑʹຊʹ͍ͯ͠
͘ελΠϧɻͦ͏͢Δͱاըʹಈ͖Λ͍͑͢
·ͱΊ
·ͱΊ • εύʔείϛϡχέʔγϣϯʢίϛϡχέʔγϣϯ͕ૄ͔ʹͳΔέʔεʣ • ΞʔΩςΫνϟૄʹͯ͠Α͍͕ɺίϛϡχέʔγϣϯૄʹͯ͠ ͍͚ͳ͍ • ΠϯϑϥϨεϙϯγϏϦςΟʢΠϯϑϥͷΛ࣋ͭʣ • ΠϯϑϥΛݟΔͷόοΫΤϯυ͚ͩʹ͋ΒͣɺશһͰݟΔඞཁ͕͋
Δ • ϏοάόϯδϣΠϯτʢ࠷ޙͷ࠷ޙʹͳ͔ͬͯΒ݁߹ςετʣ • ࠷ޙͷ࠷ޙʹ݁߹ɻͰͳ͘ग़དྷ্͕Γ࣍ୈɺঃʑʹ݁߹͍ͯ͘͠
·ͱΊ • ϑϩϯτΤϯυ/όοΫΤϯυͰͳ͘ɺ • ϑϩϯτΤϯυόοΫΤϯυ • BFF Backend For
Frontend Ͱͳ͘ɺ
·ͱΊ • ϑϩϯτΤϯυ/όοΫΤϯυͰͳ͘ɺ • ϑϩϯτΤϯυόοΫΤϯυ • BFF Backend For
Frontend Ͱͳ͘ɺ • Best Friends Forever Ͱ͋Γ·͢Α͏ʹɻ
·ͱΊ • ϑϩϯτΤϯυ/όοΫΤϯυͰͳ͘ɺ • ϑϩϯτΤϯυόοΫΤϯυ • BFF Backend For
Frontend Ͱͳ͘ɺ • Best Friends Forever Ͱ͋Γ·͢Α͏ʹɻ ϦΫϧʔτςΫϊϩδʔζͰɺ#''ΛͬͯαʔϏε ΛͬͯΈ͍ͨΤϯδχΞΛ΅͠ΎʢҎԼུʣ