System.Text.Json is currently the most modern way to handle Json files efficiently. Efficiency here also means that memory sparing files are read in.
A very efficient way to handle Json files is not to load them into a string first, but to implement the deserialization via streams. This keeps the application more scalable and performant.
System.Text.Json has this built in, so such an implementation can be done within a few lines.
1// Create Client
2BlobContainerClient container = new(_options.ConnectionString, _options.ContainerName);
3BlobClient blobClient = container.GetBlobClient(_options.BlobPath);
4
5// check if blob exists
6Azure.Response<bool> exists = await blobClient.ExistsAsync(ct).ConfigureAwait(false);
7if (exists.Value is false)
8{
9 return null;
10}
11
12// Get Blob Stream
13BlobOpenReadOptions readOptions = new(allowModifications: false);
14using Stream stream = await blobClient.OpenReadAsync(readOptions, ct).ConfigureAwait(false);
15
16// read json
17JsonSerializerOptions jsonOpions = new();
18
19MyDeserializationTargetClass? myDeserializedObject = await JsonSerializer
20 .DeserializeAsync<MyDeserializationTargetClass>(stream, jsonOpions, ct)
21 .ConfigureAwait(false);
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BEN ABT
Ben is Chief Engineering Officer and Principal Software Engineer at Medialesson.de, with a strong focus on .NET and Microsoft Azure. In his professional role, he designs and builds highly scalable platforms for hybrid and cloud-based scenarios. He also advises companies and C-levels on migrating to the sovereign cloud.
He runs myCSharp.de, the largest and most active German-speaking C# community forum, actively contributes to both his own and external open-source projects and regularly shares his knowledge through his blog, at community events, conferences and as a writer for technical magazines.
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