Since DBs have 8 CPUs available, connection pool sizes are: 8 * 32 = 256 for Mongo and 8 * 8 = 64 for Postgres. Empirically, MongoDB benefits from having much more connections, yielding better results; especially for write-heavy workloads.
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Joe FayTechnology Reporter，详情可参考服务器推荐
Mitchell Hashimoto Co-founder, HashiCorp，详情可参考下载安装 谷歌浏览器 开启极速安全的 上网之旅。
Варвара Кошечкина (редактор отдела оперативной информации)，更多细节参见体育直播
I think there was a much hackier solution at the time.