Query: Quantified advantage of using System.Text.Json over Newtonsoft

[snjosephms]

The official documentation mentions that "System.Text.Json focuses primarily on performance, security, and standards compliance." Can you help quantify the advantage System.Text.Json offers in these aspects over Newtonsoft.Json?

Reference: https://learn.microsoft.com/en-us/dotnet/standard/serialization/system-text-json/migrate-from-newtonsoft?pivots=dotnet-6-0#table-of-differences-between-newtonsoftjson-and-systemtextjson

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Issue Details

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The official documentation mentions that "System.Text.Json focuses primarily on performance, security, and standards compliance." Can you help quantify the advantage System.Text.Json offers in these aspects over Newtonsoft.Json?

Reference: https://learn.microsoft.com/en-us/dotnet/standard/serialization/system-text-json/migrate-from-newtonsoft?pivots=dotnet-6-0#table-of-differences-between-newtonsoftjson-and-systemtextjson

Author:	snjosephms
Assignees:	-
Labels:	area-System.Text.Json, untriaged
Milestone:	-

[snjosephms]

Following up on this, can you help with this query?

[snjosephms]

Following up on this again, can you help with this query?

[gregsdennis]

@snjosephms please have some patience. Your question was asked over the Christmas/New-Year/Other-Holiday break, and the people who can answer may not yet be

• back in the office
• caught up on other stacked up work

They're pretty good about answering questions around here.

[snjosephms]

Sure, thanks.

[eiriktsarpalis]

Hi @snjosephms. I'm guessing this is primarily a question about performance since the "security" and "standards compliance" bits are expanded on in the sections following the sentence that you quoted.

It's a good question, we run a number of benchmarks comparing STJ to other well-known JSON serializers. We generally avoid posting performance numbers in documentation since these are subject to change, but here is a snapshot containing results from a few months back: dotnet/performance#2740

[snjosephms]

Thank you, do you also have the performance comparison of STJ with the Newtonsoft library? If so, can you share the numbers for the same?

[eiriktsarpalis]

It's there, see the "JSON.NET" rows in the linked benchmark results.