什么是可扩展的SaaS架构？

公司使用可扩展的SaaS架构来在流量需求变化时维持性能；您应该使用垂直和水平策略。

如果您希望SaaS架构在需求旺盛时期保持高效，那么仔细的SaaS架构实施和设计是必不可少的。

As your user base grows, you must adapt to their new requirements – which is where scalability plays a role. How you adapt to market demands and other adjustments depends on your SaaS architecture implementation.

Here are some of the reasons why you need to consider your SaaS architecture: 

• Growth: Scalable SaaS architectures should facilitate growth as your product becomes more established, but they should not sacrifice performance. Reliability is also a crucial consideration here. 
• Avoiding Churn: SaaS architectures need to have the capacity to manage more customers; use scalable systems to avoid overwhelm and lower 客户流失率. 
• 性能：SaaS 基础设施在高峰期不应表现更差，也不应在停机期间使用超出所需的资源（并加剧成本）；可扩展的基础设施使您可以为性能目的微调资源。 
• Agility: 无论您身处哪个行业，客户行为和技术需求都可能会发生变化。因此，您必须拥有一个可以根据这些需求进行扩展的 SaaS 基础设施；您希望限制技术投入的数量。 

在确定是否使用可扩展的 SaaS 基础设施时，请考虑这些因素。它们也应该影响您与某些软件提供商合作的决定。 

采用缓存机制。同时， 负载均衡 对于均匀的跨服务器流量分配至关重要，这应能防止瓶颈。 

其他需要考虑的事项有： 

• 微服务架构 that break large apps into small services.
• Asynchronous processing is essential to handle tasks independently.
• You should add new servers via 横向扩展.

Understanding customer lifetime value and other metrics is vital for SaaS backend scaling. You also need to think about modular architecture and how you balance loads across servers.

Being specific with your growth plan and modular architectures are two other important mechanisms.

Pros and cons to think about are:

优点：

• Scale up or down, depending on your current traffic.
• 在更新功能、修复错误和添加额外功能时，您应该使用微服务架构。
• 独立部署可能有助于您更快地启动，但前提是必须有效地完成。

缺点： 

• 您必须考虑您的开销并提前计划。
• 考虑延迟的影响以及是否需要添加任何其他内容来提高应用程序性能。
• 您需要投入精力来高效地解决问题。

Potential things to think about when scaling cloud infrastructure are:

• Flexibility: Prepare for fluctuations in traffic and consider how many resources you need.
• 可扩展性：您需要具备根据流量进行扩展的能力。
• 复杂性：了解扩展的复杂性 云基础设施 如果您是规模较大的组织。 
• 成本：您必须谨慎使用云基础设施，以避免成本过高。