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The design of the wrapper functions meant we couldn’t easily unmarshal the CUE value into the wrapper functions. This meant we needed to generate unmarshalled functions for the config types. We use the excellent Jennifer library by Dave (no really; github.com/dave/jennifer) for generating Go files.
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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jsoniter
A high-performance 100% compatible drop-in replacement of "encoding/json" (by json-iterator)
For each Go type used within the config, we generate a separate unmarshaller function. The unmarshallers use json-iterator to process the output from CUE, while tracking the path within the config to the unmarshalled value. This path tracking will allow the function to check if live overrides have been provided on that path and return the override instead.
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Encore
Open Source Development Platform for building robust type-safe distributed systems with declarative infrastructure
We launched the initial version of config a couple of weeks ago in version 1.9.0. However, this is only the start of our journey of improving the state of the configuration of backend developers. As discussed above one of the key features we want to add next is the ability to allow applications to have parts of their configuration updated in realtime on a time-limited basis for dealing with incidents. This means adding a new API to give you the ability to get a channel from each wrapper to watch for changes in the value, allowing your application to react to configuration changes, such as resetting rate limiters to the new rates.
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Finally, we settled on the same configuration language that we use internally for our own systems: CUE Lang. As it has many of the properties we where after:
