journal_mode: The default rollback journal meant readers could block writers and vice-versa, so you effectively serialized all database access. This was a major bottleneck and most apps would see frequent SQLITE_BUSY errors start to stack up as a result. Instead, you can switch it to WAL mode which uses a write-ahead journal and allows readers and writers to access the DB concurrently.
这对于小米汽车在欧洲的开拓颇为重要。因为在欧洲销售的中国汽车，售价要比国内贵上许多。德国波鸿汽车研究中心的数据显示，在欧洲售卖的中国汽车，相比本土加价幅度达到了118%。
。pg电子官网对此有专业解读
Image source, Doctor Who/BBC
By Katja VujićPublished: Mar 10, 2026 3:00 PM EDT