A composite B-tree is still a sorted tree, but now entries are ordered first by severity, and then by timestamp within each severity value. This works great for this query shape: Postgres can jump directly to the portion of the tree matching severity
Путин освободил от должности помощника секретаря Совета безопасности14:49
，这一点在下载搜狗高速浏览器中也有详细论述
红莲湖地处武汉新城核心、武鄂黄黄地理中心，属于大光谷30分钟度假圈，紧邻红莲湖水域，周边连一个同类的综合文旅项目都没有。。传奇私服新开网｜热血传奇SF发布站｜传奇私服网站对此有专业解读
Российские спецслужбы взломали телефон начштаба бригады ВСУ08:59
We run JavaScript at scale across the Terminal, using underlying runtimes and engines such as Chromium, Node.js and SpiderMonkey. Our users, and the financial markets in which they invest, span every time zone on earth. We pass timestamps constantly: between services, into storage, into the UI, and across systems that all have to agree on what "now" means, even when governments change DST rules with very little notice.