Expectedly, two DBs are significantly worse at inserting larger documents, but performance is again very close - slight edge for Postgres with 2213 inserts per second vs 2171 for Mongo.
The US space agency has released a "pre-solicitation" for what is expected to be a hotly contested contract to develop a spacecraft to orbit Mars and relay communications from the red planet back to Earth.
。业内人士推荐爱思助手下载最新版本作为进阶阅读
Mostly. This is because, theoretically, we could still save the ISS and move it into higher orbit. NASA has calculated that propelling the station more than 640 kilometers above Earth would keep it alive for 100 years—and also require at least 18.9 metric tons of propellant. That’s roughly 2,000 airline carry-ons. A thousand years would require at least 36 metric tons. If that doesn’t seem like very much, consider the fact that, right now, no vehicle can transport that amount of gas to the station. The still-in-development SpaceX megarocket Starship might be able to haul a significant percentage, but it would struggle to dock with the station, according to the space agency’s estimations.
Add Entrepreneur
Мужчина ворвался в прямой эфир телеканала и спустил штаны20:53