]> 2026-09-08T15:37:25+09:00 Lesson:request oriented durable write caching for application performance 951bd722 3000 ko 작은 persistent 또는 non-volatile write cache를 database logging 및 journaling과 함께 사용하는 시스템에 높다. Application hint로 critical process를 지정하고 process dependency와 I/O dependency에 criticality를 상속해 request가 기다리는 writes만 NVWC에 admit한다. S3ResearchAgent medium Publication scope: international. Lab publication metadata: 1. Sangwook Kim, Hwanju Kim, Sang-Hoon Kim, Joonwon Lee, and Jinkyu Jeong, "Request-Oriented Durable Write Caching for Application Performance," in Proceedings of The 2015 USENIX Annual Technical Conference (USENIX ATC 15), Santa Clara, CA, USA, July 8-10, 2015. Verification level: full_text. Sources checked: https://www.usenix.org/conference/atc15/technical-session/presentation/kim https://www.usenix.org/system/files/conference/atc15/atc15-paper-kim.pdf 2026-07-16T15:06:01Z 2461238.1291782 Publication record 1: Sangwook Kim, Hwanju Kim, Sang-Hoon Kim, Joonwon Lee, and Jinkyu Jeong, "Request-Oriented Durable Write Caching for Application Performance," in Proceedings of The 2015 USENIX Annual Technical Conference (USENIX ATC 15), Santa Clara, CA, USA, July 8-10, 2015. Critical process를 식별하려면 application hint가 필요하다. 논문도 automatic kernel-level identification을 미래 작업으로 명시했으며 평가는 PostgreSQL, Redis와 특정 NVWC 구성에 한정된다. Technical interpretation: Cache admission은 write 자체의 동기 또는 비동기 속성보다 최종 사용자 request가 실제로 기다리는 dependency를 기준으로 해야 한다. Request-Oriented Durable Write Caching for Application Performance PostgreSQL과 Redis에서 blind all-write caching 대비 최대 2.2배 성능과 최대 87% write-traffic 감소를 보였다. SSD NVWC에서 PostgreSQL은 ALL 대비 약 1.8-2.2배, SYNC 대비 2.2-2.5배였다. Redis에서는 ALL 대비 throughput 17-32% 및 47-55% 향상과 cached write 20-29% 및 84-87% 감소를 보였으며 99.99th latency는 79-83ms 대 기존 1초 초과였다. 용량과 내구성이 제한된 NVWC에 모든 write를 넣지 않고 application request의 critical path에 있는 write만 넣어 성능을 높일 수 있는가? lab Cache admission은 write 자체의 동기 또는 비동기 속성보다 최종 사용자 request가 실제로 기다리는 dependency를 기준으로 해야 한다. Draft 2026-07-18T15:00:30Z 2461240.1253472 2026-07-18T15:00:30Z 2461240.1253472 request oriented durable write caching for application performance 951bd722 3000 ev_47d73766437c4c72 2026-07-16T15:06:02Z 2461238.1291898 S3ResearchAgent Sangwook Kim, Hwanju Kim, Sang-Hoon Kim, Joonwon Lee, and Jinkyu Jeong, "Request-Oriented Durable Write Caching for Application Performance," in Proceedings of The 2015 USENIX Annual Technical Conference (USENIX ATC 15), Santa Clara, CA, USA, July 8-10, 2015. paper Source: Yonsei University Computer Systems Laboratory publication list supplied by the user. Manifestation 1 of 1. not_recorded request oriented durable write caching for application performance 951bd722# 78e294420dba171694253f52d6437036 3000 canonical-paper-v2-951bd722 2026-07-18T05:35:19Z 2461239.7328588 S3ResearchAgent Sangwook Kim, Hwanju Kim, Sang-Hoon Kim, Joonwon Lee, and Jinkyu Jeong, "Request-Oriented Durable Write Caching for Application Performance" in Proceedings of The 2015 USENIX Annual Technical Conference (USENIX ATC 15), Santa Clara, CA, USA, July 8-10, 2015. paper 정본 Lesson 보강 근거. 검토 원본: Lesson:technical_review_request_oriented_durable_write_caching_for_application_performance_34a30cbb. 확인 범위: full_text. 확인한 자료: https://www.usenix.org/conference/atc15/technical-session/presentation/kim ; https://www.usenix.org/system/files/conference/atc15/atc15-paper-kim.pdf. 질문, 방법, 평가, 해석, 재사용 교훈, 적용 범위와 한계를 같은 Lesson 본문에 통합했습니다. full_text request oriented durable write caching for application performance 951bd722# 08a06157eca380fc9446d02b114dbc27 3000 2026-07-18T14:58:57Z 2461240.1242708 S3ResearchAgent verify_4ba04db1ed9aabb2258f partial_source context 보존 원문 객체를 확보했으나 이 일괄 검증에서는 claim-bearing 범위를 재판정하지 않아 결론을 보류함. inconclusive 2e8231b0dc06b7114bfcdfad3fc72d8efeb5f38a42266b8adf6b2ffb400b1e78 R2-RESTIC:7f893ca5afd2cfb6fe320e9b61063ccc70e75a7a96589420038c8cf338b273be; archive-manifest-sha256=e28171fb69e141ce306d92dfe4b10e6cdc6e81d4fa910c30a846204dbcf8edf8; sha256=2e8231b0dc06b7114bfcdfad3fc72d8efeb5f38a42266b8adf6b2ffb400b1e78 보존 파일 objects/sha256/2e/2e8231b0dc06b7114bfcdfad3fc72d8efeb5f38a42266b8adf6b2ffb400b1e78 ev_47d73766437c4c72 cfef2359598acfbbd0216d362eb5de60c428b75f9838a7d0a46cf056aefaff65 request oriented durable write caching for application performance 951bd722# 5ee6a415b4526afb2528a0324e73be2a 3000 2026-07-18T14:58:58Z 2461240.1242824 S3ResearchAgent verify_45d8be3185c93d085baf partial_source context 보존 원문 객체를 확보했으나 이 일괄 검증에서는 claim-bearing 범위를 재판정하지 않아 결론을 보류함. inconclusive 2e8231b0dc06b7114bfcdfad3fc72d8efeb5f38a42266b8adf6b2ffb400b1e78 R2-RESTIC:7f893ca5afd2cfb6fe320e9b61063ccc70e75a7a96589420038c8cf338b273be; archive-manifest-sha256=e28171fb69e141ce306d92dfe4b10e6cdc6e81d4fa910c30a846204dbcf8edf8; sha256=2e8231b0dc06b7114bfcdfad3fc72d8efeb5f38a42266b8adf6b2ffb400b1e78 보존 파일 objects/sha256/2e/2e8231b0dc06b7114bfcdfad3fc72d8efeb5f38a42266b8adf6b2ffb400b1e78 canonical-paper-v2-951bd722 92b1273e587e038746563c983fb1b383e577390eed1380801381d08262f23740 request oriented durable write caching for application performance 951bd722# 72df1e921f808e298b33ff86ae4e058b 3000 2026-07-18T15:00:30Z 2461240.1253472 S3ResearchAgent verify_3e96ffbe87f566b02667 official_abstract observation,interpretation,reusable_lesson claim-bearing O/I/R coverage was not established; confidence forced to low inconclusive 2e8231b0dc06b7114bfcdfad3fc72d8efeb5f38a42266b8adf6b2ffb400b1e78 R2-RESTIC:7f893ca5afd2cfb6fe320e9b61063ccc70e75a7a96589420038c8cf338b273be; archive-manifest-sha256=e28171fb69e141ce306d92dfe4b10e6cdc6e81d4fa910c30a846204dbcf8edf8; sha256=2e8231b0dc06b7114bfcdfad3fc72d8efeb5f38a42266b8adf6b2ffb400b1e78; high-confidence adjudication ledger Saved official abstract inspected in full; it supports the paper identity/headline only, not every detailed metric, limitation, and derived O/I/R statement. canonical-paper-v2-951bd722 92b1273e587e038746563c983fb1b383e577390eed1380801381d08262f23740 request oriented durable write caching for application performance 951bd722# 8816fc9ce35cade82995c0fe18c3edc2 Lesson:technical review request oriented durable write caching for application performance 34a30cbb 3000 ko technical review request oriented durable write caching for application performance 34a30cbb Supersedes 102 ko Supersedes