If pessimistic session locking is used, it should generally only be used to block other users from updating; it should not block reads of the locked data.
如果使用悲观会话锁定，它通常只用于阻止其他用户进行更新，而不是阻止对锁定数据的读取。
Although these warnings aren't without merit, I see Fenner's belief that all of mankind may not exist in a century to be overly pessimistic.
尽管这些警告并非毫无根据，但我认为芬纳关于所有人类在一个世纪后将不复存在的观点过于悲观。
Pessimistic session locks should generally be write locks; they should let other users read the locked data, unless there is a very strong case to not do so.
悲观会话锁通常为写入锁，它们允许其他用户读取锁定的数据，除非遇到不能读取的情况。
I'm not saying this to be pessimistic, but just to remind you not to take life for granted.
我不是说这个是悲观的，而只是提醒你，不要认为生命就一定是好好的。
It is probably best to not to be around pessimistic people if you know they will make you feel down, however, if these people are your friends you may not be able, nor wish, to avoid them.
可能最好的是如果你知道他们会让你感到心情沉重，那么就不要和悲观的人在一起，然而，如果这些人是你的朋友，你也许无法能够也不希望回避他们。
If you've always had a pessimistic worldview, it can be difficult to shift your focus, but it is possible to start seeing the glass as half full, not half empty.
如果你过去一直都持有消极世界观，那么改变你的焦点是一件困难的事情，开始看杯子中半杯是满的，而不是半杯是空是一件可能的事情。
Pessimistic concurrency is not a scalable option when users are interacting with data and causing records to be locked for relatively large periods of time.
如果用户与数据进行交互，会使记录锁定相对长的时间，保守式并发并不是可伸缩的选项。
But even that sort of growth, if not followed by more of the same, does little to justify current prices and there are any number of reasons to be pessimistic.
即便是这些类型的增长，如果后续没有出现同样的增长跟上，现在的股价也很难站得住脚。而且，还有很多让人悲观的理由。
When you are caught in the extremity, can not be pessimistic and to have hope.
当你陷入绝境的时候，不要悲观，要心存希望。
When you are caught in the extremity, can not be pessimistic and to have hope.
当你陷入绝境的时候，不要悲观，要心存希望。
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