Жители Санкт-Петербурга устроили «крысогон»17:52
在我看来，廖祥忠提出的教育重构思路，还揭示了一个更为深刻的变革：教师角色的根本性转变。，更多细节参见wps
Going through them briefly: this is not a distributed system and it has a very hard limit on scalability or availability. You can deploy a “SpacetimeDB cluster”, meaning a primary instance and several followers with eventually consistent replication (emphasis on eventually consistent; the WAL is eventually consistent, the replication is too, there’s a lot of margin for things to go wrong here), but your whole system is bottlenecked by the CPU and RAM capacity of the machine where your main SpacetimeDB instance is deployed. You need enough CPU for your database to execute all the queries, but also for your whole application to execute all its application logic, as again the application lives inside the database. You need enough RAM to fit all your database’s data in-memory. SpacetimeDB is not disk-backed at all; it just flushes a WAL to disk (and periodically, snapshots that make recovering from the WAL quicker on restarts). If your dataset grows larger than RAM, your database (and your application, which are the same thing) will fail over. The only option for scalability here is vertical: buying a bigger machine to run your database.，推荐阅读谷歌获取更多信息
尝试将一条剪辑过的 4K 60 帧素材，以 4K 30 帧、H.264 格式导出，视频总长 2 分 53 秒，导出总耗时 2 分 58 秒，速度确实不快，但仍处于可以接受的范围内。