TAILIEUCHUNG - HandBooks Professional Java-C-Scrip-SQL part 27

Tham khảo tài liệu 'handbooks professional java-c-scrip-sql part 27', công nghệ thông tin, kỹ thuật lập trình phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | . So What I m pretty sure that continuation servers will prove to be important. I m equally sure that Seaside is not a killer app that will suddenly spring Smalltalk into the mainstream. Smalltalk has 30 years of reputation to overcome. In this time Smalltalk has rarely been more than an academic language with small forays into commercial development. The Smalltalk community is smart and has technical vision but I ve not yet seen the marketing leadership that will break Smalltalk into the mainstream. After 30 years that s not likely to change. Continuation servers do have some minor hurdles to overcome So far the servers require ugly temporary URLs because each continuation must have a unique identifier. Users don t like uglier URLs. Like Amazon Seaside works around this limitation by providing a meaningful piece of the URL followed by the continuation ID. Continuation servers will not scale as well because saving continuations is stateful and expensive though if you think about it the problem is not quite as bad as it could be. Most of the continuations in a server will have common code for the framework. Only the last part of the call stack should be different from one continuation to the next. Partial continuations should provide a good performance boost. So far the best servers are on academic languages. Lisp Smalltalk and Ruby may be holding them back. And of course continuation servers may help break one of those languages closer to the mainstream. Still in the end continuation servers will play a role because they re a much more natural and powerful abstraction and they represent a much more natural way to program. Systems continually get more processing power and both short-term and long-term storage get cheaper. Productivity eventually trumps all else. In the end continuation servers are fast enough. Higher abstractions make us more productive. If you held a gun to my head and forced me to make a prediction I d guess that continuation servers will .

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