{"id":747,"date":"2025-12-18T17:07:46","date_gmt":"2025-12-18T09:07:46","guid":{"rendered":"https:\/\/www.ndnlab.com\/?p=747"},"modified":"2025-12-18T17:07:46","modified_gmt":"2025-12-18T09:07:46","slug":"sailfish-towards-improving-the-latency-of-dag-based-bft","status":"publish","type":"post","link":"https:\/\/www.ndnlab.com\/?p=747","title":{"rendered":"Sailfish: Towards Improving the Latency of DAG-based BFT"},"content":{"rendered":"\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p>N. Shrestha, R. Shrothrium, A. Kate and K. Nayak, &#8220;Sailfish: Towards Improving the Latency of DAG-Based BFT,&#8221; 2025 IEEE Symposium on Security and Privacy (SP), San Francisco, CA, USA, 2025, pp. 1928-1946, doi: 10.1109\/SP61157.2025.00021. keywords: {Privacy;Fault tolerance;Directed acyclic graph;Protocols;Fault tolerant systems;Throughput;Complexity theory;Proposals;Security;byzantine fault tolerance;dag-based consensus;partial synchrony;latency},<\/p>\n<\/blockquote>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e00\u3001\u52a8\u673a<\/h2>\n\n\n\n<p>\u73b0\u6709 DAG-based BFT \u5171\u8bc6\u534f\u8bae\u541e\u5410\u9ad8\uff0c\u4f46<strong>\u786e\u8ba4\uff08commit\uff09\u5ef6\u8fdf\u5f88\u5927<\/strong>\uff1b\u5c24\u5176\u662f<strong>\u65e0\u6cd5\u505a\u5230\u201c\u6bcf\u4e00\u8f6e\u90fd\u6709 leader \u4e14\u4f4e\u5ef6\u8fdf\u63d0\u4ea4\u201d<\/strong>\u3002<\/p>\n\n\n\n<p>\u5728\u533a\u5757\u94fe \/ BFT \u5171\u8bc6\u91cc\uff0c\u6709\u4e24\u4e2a\u5173\u952e\u6027\u80fd\u6307\u6807\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u541e\u5410\u91cf\uff08throughput\uff09<\/strong>\uff1a\u5355\u4f4d\u65f6\u95f4\u5904\u7406\u591a\u5c11\u4ea4\u6613<\/li>\n\n\n\n<li><strong>\u5ef6\u8fdf\uff08latency\uff09<\/strong>\uff1a\u4e00\u7b14\u4ea4\u6613\u591a\u4e45\u80fd\u6700\u7ec8\u786e\u5b9a\uff08commit\uff09<\/li>\n<\/ul>\n\n\n\n<p>\u73b0\u6709\u7684DAG-based BFT\uff08\u5982 Bullshark\u3001Shoal\u3001Mysticeti\uff09\u541e\u5410\u9ad8\uff08\u6240\u6709\u8282\u70b9\u5e76\u884c\u63d0\u8bae\uff09\u4f46\u5ef6\u8fdf\u9ad8\uff08leader \u63d0\u4ea4\u6162\uff09\u3002<\/p>\n\n\n\n<p><strong>Sailfish \u7684\u76ee\u6807<\/strong>\u5c31\u662f\uff1a<strong>\u5728\u4fdd\u6301 DAG-based \u9ad8\u541e\u5410\u7684\u540c\u65f6\uff0c\u628a\u63d0\u4ea4\u5ef6\u8fdf\u964d\u5230\u548c\u201c\u4f20\u7edf leader-based BFT\u201d\u4e00\u6837\u4f4e<\/strong><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e8c\u3001\u73b0\u6709DAG-based BFT\u4e3a\u4ec0\u4e48\u5ef6\u8fdf\u9ad8\uff1f<\/h2>\n\n\n\n<p>\u4e3a\u4ec0\u4e48 DAG-based BFT \u5929\u751f\u5ef6\u8fdf\u9ad8<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">1\u3001DAG-based BFT \u7684\u57fa\u672c\u7ed3\u6784<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u7cfb\u7edf\u6309 round\uff08\u8f6e\uff09\u8fd0\u884c<\/li>\n\n\n\n<li>\u6bcf\u4e00\u8f6e\uff1a\n<ul class=\"wp-block-list\">\n<li><strong>\u6240\u6709\u8282\u70b9<\/strong>\u90fd\u63d0\u8bae\u4e00\u4e2a vertex\uff08\u533a\u5757\uff09<\/li>\n\n\n\n<li>vertex \u6307\u5411\u4e0a\u4e00\u8f6e \u22652f+1 \u4e2a vertex\uff08\u5f62\u6210 DAG\uff09<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u771f\u6b63\u51b3\u5b9a\u987a\u5e8f\u7684\u4e0d\u662f\u6240\u6709 vertex\uff0c\u800c\u662f leader vertex<\/strong><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2\u3001\u73b0\u6709\u534f\u8bae\u7684\u5173\u952e\u9650\u5236<\/h3>\n\n\n\n<p>\u4ee5 <strong>Bullshark \/ Shoal<\/strong> \u4e3a\u4ee3\u8868\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>leader \u4e0d\u662f\u6bcf\u8f6e\u90fd\u6709<\/strong>\n<ul class=\"wp-block-list\">\n<li>Bullshark\uff1a<strong>\u6bcf 2 \u8f6e\u4e00\u4e2a leader<\/strong><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>leader \u63d0\u4ea4\u8981\u7b49\u201c\u6295\u7968\u8f6e\u201d<\/strong>\n<ul class=\"wp-block-list\">\n<li>leader \u5728 r \u8f6e\u63d0\u51fa<\/li>\n\n\n\n<li>r+1 \u8f6e\u5927\u5bb6\u201c\u6295\u7968\u201d<\/li>\n\n\n\n<li>r+2 \u624d\u5b89\u5168\u63d0\u4ea4<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u6bcf\u8f6e\u65e0\u6cd5\u6709\u591a\u4e2aleader<\/strong>\n<ul class=\"wp-block-list\">\n<li>leader \u7684 commit \u89c4\u5219\u4f9d\u8d56\u4e8e\u201c\u6bcf\u4e2a proposer slot \u90fd\u8981\u548c\u5176\u5b83 slot \u6709\u94fe\u63a5\u201d<br>\u8fd9\u5728 \u6bcf\u8f6e\u591a\u4e2a<strong> proposer<\/strong> \u7684 DAG \u4e2d\u662f\u505a\u4e0d\u5230\u7684\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e09\u3001Sailfish \u7684\u6838\u5fc3\u7a81\u7834\u3002<\/h2>\n\n\n\n<p>\u5141\u8bb8 leader \u6bcf\u4e00\u8f6e\u51fa\u73b0\uff0c\u4f46\u8981\u6c42\uff1a\u8981\u4e48\u201c\u660e\u786e\u94fe\u63a5\u524d\u4e00\u4e2a leader\u201d\uff0c\u8981\u4e48\u201c\u8bc1\u660e\u524d\u4e00\u4e2a leader \u4e0d\u53ef\u80fd\u88ab\u63d0\u4ea4\u201d\u3002<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"194\" src=\"https:\/\/www.ndnlab.com\/wp-content\/uploads\/2025\/12\/image-35-1024x194.png\"  class=\"wp-image-748\" srcset=\"https:\/\/www.ndnlab.com\/wp-content\/uploads\/2025\/12\/image-35-1024x194.png 1024w, https:\/\/www.ndnlab.com\/wp-content\/uploads\/2025\/12\/image-35-300x57.png 300w, https:\/\/www.ndnlab.com\/wp-content\/uploads\/2025\/12\/image-35-768x145.png 768w, https:\/\/www.ndnlab.com\/wp-content\/uploads\/2025\/12\/image-35.png 1141w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" title=\"Sailfish: Towards Improving the Latency of DAG-based BFT\u63d2\u56fe\" alt=\"Sailfish: Towards Improving the Latency of DAG-based BFT\u63d2\u56fe\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center\">\u56fe\u4e00\u3001DAG-based BFT \u534f\u8bae\u6548\u679c\u5bf9\u6bd4\u56fe<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u56db\u3001\u5173\u952e\u521b\u65b0\uff1aNo-Vote Certificate\uff08NVC\uff09<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1\u3001\u4ec0\u4e48\u662f No-Vote Certificate\uff1f<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>NVC = 2f+1 \u4e2a\u8282\u70b9\u7684\u201c\u6211\u6ca1\u7ed9\u4e0a\u4e00\u8f6e leader \u6295\u7968\u201d\u8bc1\u660e<\/strong><\/li>\n\n\n\n<li>\u542b\u4e49\uff1a \u4e0a\u4e00\u8f6e leader <strong>\u4e0d\u53ef\u80fd\u88ab\u63d0\u4ea4<\/strong><\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2\u3001 Sailfish \u5bf9 leader \u7684\u5f3a\u5236\u7ea6\u675f<\/h3>\n\n\n\n<p><strong>\u6bcf\u4e00\u8f6e\u7684 leader vertex \u5fc5\u987b\u6ee1\u8db3\uff1a<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>\u60c5\u51b5<\/th><th>\u8981\u6c42<\/th><\/tr><\/thead><tbody><tr><td>\u4e0a\u4e00\u8f6e leader \u53ef\u89c1<\/td><td><strong>strong path \u6307\u5411\u5b83<\/strong><\/td><\/tr><tr><td>\u4e0a\u4e00\u8f6e leader \u4e0d\u53ef\u89c1<\/td><td><strong>\u643a\u5e26 NVC \u8bc1\u660e\u5b83\u6b7b\u4e86<\/strong><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e94\u3001Sailfish \u7684\u63d0\u4ea4\u89c4\u5219\u4e3a\u4ec0\u4e48\u66f4\u5feb\uff1f<\/h2>\n\n\n\n<h4 class=\"wp-block-heading\"><strong>1\u3001Sailfish \u89c2\u5bdf\u5230\uff1aRBC \u7684\u7b2c\u4e00\u4e2a\u6d88\u606f\uff08first message\uff09\u5982\u679c sender \u662f\u8bda\u5b9e\u7684\uff0c\u5b83\u4e00\u5b9a\u7b49\u4e8e\u6700\u7ec8 deliver \u7684\u503c\u3002<\/strong><\/h4>\n\n\n\n<p><strong>2\u3001Sailfish \u7684\u63d0\u4ea4\u6761\u4ef6\u53ea\u8981\u770b\u5230\uff1a2f+1 \u4e2a\u201c\u4e0b\u4e00\u8f6e vertex \u7684\u9996\u6d88\u606f\u201d\u4e14\u5b83\u4eec\u90fd strong-path \u6307\u5411\u5f53\u524d leader\uff0c \u53ef\u4ee5\u76f4\u63a5\u63d0\u4ea4<\/strong>\u3002<\/p>\n\n\n\n<p>\u63d0\u4ea4\u7684\u5b89\u5168\u6027\u5206\u6790\uff1a2f+1 \u4e2d\u81f3\u5c11 f+1 \u6765\u81ea\u8bda\u5b9e\u8282\u70b9\u3002\u8fd9\u4e9b\u503c\u6700\u7ec8\u4e00\u5b9a deliver\uff0c\u540e\u7eed leader \u5fc5\u7136\u80fd\u201c\u770b\u5230\u201d\u5f53\u524d leader\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u516d\u3001Multi-leader Sailfish\uff1a\u62d3\u5c55\u5230\u6bcf\u8f6e\u591a\u9886\u5bfc\u8005\u8fdb\u4e00\u6b65\u52a0\u901f<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">1\u3001\u601d\u8def<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6bcf\u8f6e\u9009\uff1a\n<ul class=\"wp-block-list\">\n<li><strong>1 \u4e2a main leader<\/strong><\/li>\n\n\n\n<li>\u591a\u4e2a <strong>secondary leader<\/strong><\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>main leader\uff1a\n<ul class=\"wp-block-list\">\n<li>\u8d1f\u8d23\u4fdd\u8bc1\u5b89\u5168\uff08\u94fe\u63a5 \/ NVC\uff09<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>secondary leader\uff1a\n<ul class=\"wp-block-list\">\n<li>\u5728\u201c\u4e50\u89c2\u6761\u4ef6\u201d\u4e0b\u53ef\u4ee5<strong>\u540c\u8f6e\u63d0\u4ea4<\/strong><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">2\u3001\u7ed3\u679c<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u591a\u4e2a leader vertex<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u90fd\u80fd\u5728 <strong>1 RBC + \u03b4<\/strong> \u5185\u63d0\u4ea4<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u975e\u4e50\u89c2\u60c5\u51b5\uff1a\n<ul class=\"wp-block-list\">\n<li>\u9000\u5316\u4e3a Sailfish\uff0c\u4e0d\u7834\u574f\u5b89\u5168<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u4e03\u3001\u5b9e\u9a8c\u7ed3\u679c<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"221\" src=\"https:\/\/www.ndnlab.com\/wp-content\/uploads\/2025\/12\/image-37-1024x221.png\"  class=\"wp-image-750\" srcset=\"https:\/\/www.ndnlab.com\/wp-content\/uploads\/2025\/12\/image-37-1024x221.png 1024w, https:\/\/www.ndnlab.com\/wp-content\/uploads\/2025\/12\/image-37-300x65.png 300w, https:\/\/www.ndnlab.com\/wp-content\/uploads\/2025\/12\/image-37-768x166.png 768w, https:\/\/www.ndnlab.com\/wp-content\/uploads\/2025\/12\/image-37.png 1373w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" title=\"Sailfish: Towards Improving the Latency of DAG-based BFT\u63d2\u56fe1\" alt=\"Sailfish: Towards Improving the Latency of DAG-based BFT\u63d2\u56fe1\" \/><\/figure>\n\n\n\n<p class=\"has-text-align-center\">\u56fe\u4e8c\u3001\u5b9e\u9a8c\u7ed3\u679c\u56fe<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u5173\u952e\u7ed3\u8bba<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5ef6\u8fdf\u964d\u4f4e<\/strong>\n<ul class=\"wp-block-list\">\n<li>\u6bd4 Bullshark \u4f4e \u2248 25%<\/li>\n\n\n\n<li>\u6bd4 Shoal \u4f4e \u2248 20%<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li><strong>\u541e\u5410\u4e0d\u964d\uff0c\u7565\u6709\u63d0\u5347<\/strong><\/li>\n\n\n\n<li>\u5728 <strong>\u5355\u4e2a Byzantine leader \u6545\u969c<\/strong>\u4e0b\u4ecd\u4f18\u4e8e\u73b0\u6709\u65b9\u6848<\/li>\n<\/ul>\n\n\n\n<p>\u672c\u6587\u4e3b\u8981\u53c2\u8003\u548c\u4f7f\u7528\u4e86\u8bba\u6587\u4e2d\u5c55\u793a\u7684\u56fe\u7247\uff0c\u4ee5\u4e0b\u7ed9\u51fa\u76f8\u5173\u94fe\u63a5\u3002<\/p>\n\n\n\n<p>\u8bba\u6587\u94fe\u63a5\uff1a<a href=\"https:\/\/ieeexplore.ieee.org\/document\/11023279\">https:\/\/ieeexplore.ieee.org\/document\/11023279<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>N. Shrestha, R. Shrothrium, A. Kate and K. Nayak, &#8220;Sailfish: Towards Improving the Latency of DAG-Based BFT,&#8221; 2025 IEEE Symposium on Security and Privacy (SP), San Francisco, CA, USA, 2025, pp. 1928-1946, doi: 10.1109\/SP61157.20 &hellip; <a href=\"https:\/\/www.ndnlab.com\/?p=747\">\u7ee7\u7eed\u9605\u8bfb <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":4,"featured_media":751,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-747","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blockchain"],"_links":{"self":[{"href":"https:\/\/www.ndnlab.com\/index.php?rest_route=\/wp\/v2\/posts\/747","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ndnlab.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.ndnlab.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.ndnlab.com\/index.php?rest_route=\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ndnlab.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=747"}],"version-history":[{"count":1,"href":"https:\/\/www.ndnlab.com\/index.php?rest_route=\/wp\/v2\/posts\/747\/revisions"}],"predecessor-version":[{"id":752,"href":"https:\/\/www.ndnlab.com\/index.php?rest_route=\/wp\/v2\/posts\/747\/revisions\/752"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.ndnlab.com\/index.php?rest_route=\/wp\/v2\/media\/751"}],"wp:attachment":[{"href":"https:\/\/www.ndnlab.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=747"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.ndnlab.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=747"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.ndnlab.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=747"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}