CTO的视角:技术与公司战略的融合

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"《技术内幕》-networking all-in-one for dummies 6th 2016第6版,作者Ron Soukup,主要探讨了Microsoft SQL Server 7.0的技术内幕,深入讲解了数据库架构和实现,包括查询引擎、存储引擎、数据存储格式、事务、日志和锁等核心概念。此外,还提到了如何从组件技术的角度看SQL Server,并将其与SQLite源代码对比学习。另一本书《走出软件作坊》由阿朱整理,涉及软件公司的成长、项目管理、团队建设、客户服务等多个方面,旨在帮助小型软件团队向正规军转变,提高效率和服务质量。" 本文主要涵盖了两方面的知识: 1. 数据库技术:《技术内幕》一书详尽地介绍了SQL Server 7.0的技术细节,从数据库查询引擎到存储引擎的运作机制,再到数据内部存储格式、事务处理和日志管理以及数据库锁的原理。这些内容对于理解数据库的工作方式至关重要,尤其是对于想要深入理解商业数据库产品架构和实现的读者。书中以SQL Server为例,不仅教授T-SQL语言和复杂的查询技巧,更强调了数据库系统的基础架构和设计思路,这对于数据库管理员和数据库开发者来说极其宝贵。同时,通过阅读SQLite源代码,读者可以对比理解不同数据库系统的实现差异,从而增强对数据库原理的理解。 2. 软件公司管理与成长:《走出软件作坊》提供了从技术总监到项目经理、实施经理、客服顾问等角色的工具箱,探讨了如何将小型软件团队转变为专业开发团队,强调了项目管理、人员配置、销售策略和客户服务等方面的重要性。书中的章节涵盖公司开源节流、团队建设、服务费用管理、销售策略等实际操作层面的问题,旨在帮助软件公司的领导者更好地理解和应对日常运营挑战,促进公司长期稳定发展。 这两本书的知识点相结合,既提供了技术深度,又关注了软件行业的实践应用,对于IT专业人士的成长和企业的健康发展具有很大的参考价值。通过学习这些内容,读者不仅可以提升自己的技术能力,还能增强对公司管理和团队协作的理解,从而在职业生涯中取得更大的成功。

翻译 There are several reasons a network designed on layer-2 protocols is selected over a network designed on layer-3 protocols. In spite of the difficulties of using a bridge to perform the network role of a router, many vendors, customers, and service providers choose to use Ethernet in as many parts of their networks as possible. The benefits of selecting a layer-2 design are: Ethernet frames contain all the essentials for networking. These include, but are not limited to, globally unique source addresses, globally unique destination addresses, and error control. Ethernet frames can carry any kind of packet. Networking at layer-2 is independent of the layer-3 protocol. Adding more layers to the Ethernet frame only slows the networking process down. This is known as nodal processing delay. You can add adjunct networking features, for example class of service (CoS) or multicasting, to Ethernet as readily as IP networks. VLANs are an easy mechanism for isolating networks. Most information starts and ends inside Ethernet frames. Today this applies to data, voice, and video. The concept is that the network will benefit more from the advantages of Ethernet if the transfer of information from a source to a destination is in the form of Ethernet frames. Although it is not a substitute for IP networking, networking at layer-2 can be a powerful adjunct to IP networking. Layer-2 Ethernet usage has additional benefits over layer-3 IP network usage: Speed Reduced overhead of the IP hierarchy. No need to keep track of address configuration as systems move around. Whereas the simplicity of layer-2 protocols might work well in a data center with hundreds of physical machines, cloud data centers have the additional burden of needing to keep track of all virtual machine addresses and networks. In these data centers, it is not uncommon for one physical node to support 30-40 instances.

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