Rubio said Tuesday the U.S. had organized recovery flights but officials faced logistical challenges.
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，这一点在新收录的资料中也有详细论述
Suing the hand that (used to) feed it，推荐阅读新收录的资料获取更多信息
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.
“为什么要把海水里的镁离子‘赶走’，而不是收集起来？”面对电极上厚厚的白色沉淀，田新龙看到了转机：海水中镁离子储量是陆地的数万倍，而氢氧化镁是阻燃剂、航天材料的重要原料，市场价值较高。何不因势利导，将制氢和“提矿”结合起来？