March 2022
Intermediate to advanced
293 pages
5h 31m
Chinese
Content preview from 精通区块链
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以太坊的演进 ｜ 105
中心化系统存在瓶颈的领域。例如，需要中心化应用都不具备抗审查性。在
许多中心化应用程序中，由第三方决定用户哪些可见，哪些不可见。这些决
定往往都是主观的，有些甚至在没有任何用户输入的情况下随意决定。通过
使用以太坊和
Web
等后端平台，开发者可以部署无权限的应用程序，这与中
心化应用程序大不相同。
DApp
的另外一个特点是，它们通过使用区块链实现数字资产的安全高效地转
移。例如，今天应用程序提供了抗审查性（例如
BitTorrent
）和隐私性（依靠
加密技术）。然而，除了这两个属性以外，
DApp
还能够以编程的方式快速执
行价值转移。
DApp
平台相对较新。关于如何将它们建设得最好，依然有很多东西需要学
习，况且支撑它们的基础设施依然处于发展阶段。
DApp
还没有被广泛使用。
事实上，人们对
DApp
的吸引力和持久力有一些疑问，而今天一些
DApp
的
目的似乎是不正当的。这其中有有许多赌博、游戏和去中心化交易类型的
DApp
，它们都是为了避免监管审查。
4.3.2
开发
DApp
的挑战
如今，创建
DApp
都会面临几个设计挑战，包括部署、用户体验、速度和扩
展性等问题。包括以太坊在内的所有
DApp
平台都存在这些问题。
当开发者为一个
DApp
部署智能合约时，需要确保合约代码不能有严重缺陷。
更新智能合约不是一件容易的事情。以太坊和其他智能合约平台都不允许重
新部署合约到相同的地址。此外，升级过程中通常需要对智能合约所管理的
状态进行艰难的数据迁移。
开发者可以从四个以太坊测试网中选择一个测试自己的
DApp
。负责任 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.