Microsoft Bond模式演变最佳实践 [英] Microsoft Bond schema evolution best practices

问题描述

Microsoft Bond是否具有有关架构如何随着时间演变的最佳实践?我想确定我们遵循最佳实践，这样我们就具有2种方式的兼容性(即允许我们的Bond类型将较旧的版本演化为当前版本，以及向后的兼容性允许从较新版本转换为较旧版本).我在文档中没有看到专门解决的问题(例如 https://microsoft.github .io/bond/manual/bond_cs.html 或 https ://microsoft.github.io/bond/manual/compiler.html#idl-syntax )，尽管其他序列化框架(例如Avro)在其文档中也对此进行了详细说明.

Does Microsoft Bond have some best practices on how schemas evolve over time? I want to make certain we follow best practices such that we have 2 way compatibility (i.e. allowing our Bond types to evolve older versions to the current version, as well as backward compatibility allowing conversion from a newer version back to an older version). I don't see this addressed specifically in the documentation (e.g. https://microsoft.github.io/bond/manual/bond_cs.html nor https://microsoft.github.io/bond/manual/compiler.html#idl-syntax ), though other serialization frameworks such as Avro have this explicitly detailed in their documentation.

对于它的价值，我们正在用.NET(C#/F#)编写，打算最初使用CompactBinaryWriter和CompactBinaryReader格式.

For what it's worth, we are writing in .NET (C#/F#) and intend to use the CompactBinaryWriter and CompactBinaryReader formats initially.

例如，我想像一些指导方针:

For example, I imagine some guidance along these lines:

由于字段序号用于字段解析，而不是直接使用名称()，因此
1. 字段名称会随时间而变化.我相信这是真的吗?
2. 添加新的必填"字段需要您为该字段提供默认值
3. 在较新版本中删除字段是可以的，只要较旧的版本已指定默认值
4. 如何更改字段的类型?例如，字段可以从版本1的字符串字段更改为版本2的int64吗?它可以从字符串更改为自定义联合(具有可选字段的自定义类型)吗?
5. 还有其他建议吗?

1. names of fields can change over time since the field ordinals are used for field resolution, not the names directly (except in SimpleJSON). I believe this true, is it?
2. adding a new "required" field requires you give the field a default value
3. removing a field in a newer version is okay, provided older versions had a default value assigned
4. what about changing the type of a field? For example, can a field change from an string field in version 1 to a int64 in version 2? Can it change from a string to a custom union (custom type with optional fields)?
5. any other recommendations?

谢谢！

如果对于这种类型的Microsoft Bond问题是否有任何活跃的论坛社区，我也将不感兴趣，我找不到一个...

would also be interested if there is any active forum community for this type of Microsoft Bond question, i wasn't able to find one...

推荐答案

现在可以在以下位置找到Bond模式的演变规则和最佳实践: https://microsoft.github.io/bond/manual/bond_cpp. html#schema-evolution https://microsoft.github.io/bond/manual/bond_cs. html#schema-evolution

The Bond schema evolution rules and best practices can now be found here: https://microsoft.github.io/bond/manual/bond_cpp.html#schema-evolution https://microsoft.github.io/bond/manual/bond_cs.html#schema-evolution

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