{"id":27494,"date":"2024-11-24T19:31:29","date_gmt":"2024-11-24T11:31:29","guid":{"rendered":"https:\/\/fwq.ai\/blog\/?p=27494"},"modified":"2024-11-24T19:31:29","modified_gmt":"2024-11-24T11:31:29","slug":"php7%e4%b8%ad%e7%9a%84mongodbdriverreadpreference","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/27494\/","title":{"rendered":"PHP7\u4e2d\u7684MongoDB\\Driver\\ReadPreference"},"content":{"rendered":"<p><strong>MongoDB\u8bfb\u5199\u5206\u79bb\uff08Read Preference\uff09\u7684\u51e0\u79cd\u6a21\u5f0f<\/strong><\/p>\n<p>&nbsp;<\/p>\n<p>const integer RP_PRIMARY = 1 ;<br \/>\nconst integer RP_PRIMARY_PREFERRED = 5 ;<br \/>\nconst integer RP_SECONDARY = 2 ;<br \/>\nconst integer RP_SECONDARY_PREFERRED = 6 ;<br \/>\nconst integer RP_NEAREST = 10 ;<\/p>\n<p><strong>primary<\/strong><br \/>\n\u4e3b\u8282\u70b9\uff0c\u9ed8\u8ba4\u6a21\u5f0f\uff0c\u8bfb\u64cd\u4f5c\u53ea\u5728\u4e3b\u8282\u70b9\uff0c\u5982\u679c\u4e3b\u8282\u70b9\u4e0d\u53ef\u7528\uff0c\u62a5\u9519\u6216\u8005\u629b\u51fa\u5f02\u5e38\u3002<\/p>\n<p><strong>primaryPreferred<\/strong><br \/>\n\u9996\u9009\u4e3b\u8282\u70b9\uff0c\u5927\u591a\u60c5\u51b5\u4e0b\u8bfb\u64cd\u4f5c\u5728\u4e3b\u8282\u70b9\uff0c\u5982\u679c\u4e3b\u8282\u70b9\u4e0d\u53ef\u7528\uff0c\u5982\u6545\u969c\u8f6c\u79fb\uff0c\u8bfb\u64cd\u4f5c\u5728\u4ece\u8282\u70b9\u3002<\/p>\n<p><strong>secondary<\/strong><br \/>\n\u4ece\u8282\u70b9\uff0c\u8bfb\u64cd\u4f5c\u53ea\u5728\u4ece\u8282\u70b9\uff0c \u5982\u679c\u4ece\u8282\u70b9\u4e0d\u53ef\u7528\uff0c\u62a5\u9519\u6216\u8005\u629b\u51fa\u5f02\u5e38\u3002<\/p>\n<p><strong>secondaryPreferred<\/strong><br \/>\n\u9996\u9009\u4ece\u8282\u70b9\uff0c\u5927\u591a\u60c5\u51b5\u4e0b\u8bfb\u64cd\u4f5c\u5728\u4ece\u8282\u70b9\uff0c\u7279\u6b8a\u60c5\u51b5\uff08\u5982\u5355\u4e3b\u8282\u70b9\u67b6\u6784\uff09\u8bfb\u64cd\u4f5c\u5728\u4e3b\u8282\u70b9\u3002<\/p>\n<p><strong>nearest<\/strong><br \/>\n\u6700\u90bb\u8fd1\u8282\u70b9\uff0c\u8bfb\u64cd\u4f5c\u5728\u6700\u90bb\u8fd1\u7684\u6210\u5458\uff0c\u53ef\u80fd\u662f\u4e3b\u8282\u70b9\u6216\u8005\u4ece\u8282\u70b9<\/p>\n","protected":false},"excerpt":{"rendered":"<p>MongoDB\u8bfb\u5199\u5206\u79bb\uff08Read Preference\uff09\u7684\u51e0\u79cd\u6a21\u5f0f &nbsp; const integer RP_PRIMARY = 1 ; const integer RP_PRIMARY_PREFERRED = 5 ; const integer RP_SECONDARY = 2 ; const integer RP_SECONDARY_PREFERRED = 6 ; const integer RP_NEAREST = 10 ; primary \u4e3b\u8282\u70b9\uff0c\u9ed8\u8ba4\u6a21\u5f0f\uff0c\u8bfb\u64cd\u4f5c\u53ea\u5728\u4e3b\u8282\u70b9\uff0c\u5982\u679c\u4e3b\u8282\u70b9\u4e0d\u53ef\u7528\uff0c\u62a5\u9519\u6216\u8005\u629b\u51fa\u5f02\u5e38\u3002 primaryPreferred \u9996\u9009\u4e3b\u8282\u70b9\uff0c\u5927\u591a\u60c5\u51b5\u4e0b\u8bfb\u64cd\u4f5c\u5728\u4e3b\u8282\u70b9\uff0c\u5982\u679c\u4e3b\u8282\u70b9\u4e0d\u53ef\u7528\uff0c\u5982\u6545\u969c\u8f6c\u79fb\uff0c\u8bfb\u64cd\u4f5c\u5728\u4ece\u8282\u70b9\u3002 secondary \u4ece\u8282\u70b9\uff0c\u8bfb\u64cd\u4f5c\u53ea\u5728\u4ece\u8282\u70b9\uff0c \u5982\u679c\u4ece\u8282\u70b9\u4e0d\u53ef\u7528\uff0c\u62a5\u9519\u6216\u8005\u629b\u51fa\u5f02\u5e38\u3002 secondaryPreferred \u9996\u9009\u4ece\u8282\u70b9\uff0c\u5927\u591a\u60c5\u51b5\u4e0b\u8bfb\u64cd\u4f5c\u5728\u4ece\u8282\u70b9\uff0c\u7279\u6b8a\u60c5\u51b5\uff08\u5982\u5355\u4e3b\u8282\u70b9\u67b6\u6784\uff09\u8bfb\u64cd\u4f5c\u5728\u4e3b\u8282\u70b9\u3002 nearest \u6700\u90bb\u8fd1\u8282\u70b9\uff0c\u8bfb\u64cd\u4f5c\u5728\u6700\u90bb\u8fd1\u7684\u6210\u5458\uff0c\u53ef\u80fd\u662f\u4e3b\u8282\u70b9\u6216\u8005\u4ece\u8282\u70b9<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[],"class_list":["post-27494","post","type-post","status-publish","format-standard","hentry","category-docker"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/27494","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=27494"}],"version-history":[{"count":1,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/27494\/revisions"}],"predecessor-version":[{"id":27499,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/27494\/revisions\/27499"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=27494"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=27494"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=27494"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}