March 2022
Intermediate to advanced
293 pages
5h 31m
Chinese
Content preview from 精通区块链
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其他的区块链 ｜ 243
9.5.3 DAML
DAML
是一种用于开发分布式应用的智能合约语言，它不依赖具体的区块链，
支持前面提到的所有区块链平台。开发人员在区块链上层进行
DAML
合约的
开发，智能合约开发的重点取决于商业场景，因此，在合约创建后，更容易
进行分布式账本转移和模型存储。
9.6
区块链即服务
区块链服务（
BaaS
），即供应商提供易于实施的可定制化解决方案，可能会
随着技术使用案例的增加而增长。与软件服务（
SaaS
）和云产品类似，这些
区块链产品提供用户集中管理和的分布节点等服务，下面是几个例子：
亚马逊
Quantum
分布式账本
作为亚马逊网络服务的一部分，
Quantum
分布式账本数据库（
QLDB
）是
一个基于密码学保证的分布式账本，并使用以太坊和
Hyperledger Fabric
框架。
然而，该系统是中心化的，因为基于节点的分布式区块链难以建立。
它的强大之处在于它为用户提供建立一个不可变的和加密化的安全分布式
账本的能力。
Azure
微软的
Azure
云平台提供了一个分布式模型，让开发者有能力部署不同的
区块链，如
Quorum
和
Corda
。由于使用了区块链，
Azure
支持智能合约开发。
开发人员也可以在他们的区块链实现里面设置验证器。
Azure
框架可以很
容易地将区块链信息导出到数据库，从而实现更复杂的查询。
VmWare
随着对
EVM
、
DAML
和
Hyperledger
的支持，
VmWare
区块链是一个多
区块链平台。开发者还能够使用
VmWare
的云技术来建立各种类型的基础
设施，包括选择混合云功能来提高安全性和隐私性。它还使用拜占庭容错 ...
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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.