# Engineering updates

**URL:** https://improve.xmtp.org/c/eng-updates/77.md

[Latest](https://improve.xmtp.org/latest.md) · [Categories](https://improve.xmtp.org/categories.md) · [Tags](https://improve.xmtp.org/tags.md)

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## [About the Engineering updates category](https://improve.xmtp.org/t/about-the-engineering-updates-category/901)

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**Author:** [@jha](https://improve.xmtp.org/u/jha)\
**Replies:** 0\
**Last updated:** [April 1, 2025, 4:40pm UTC](https://improve.xmtp.org/t/about-the-engineering-updates-category/901 "2025-04-01T16:40:09Z")

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The latest updates and insights from XMTP core engineers.

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## [Incident Report: Invalid KeyPackage Handling & Group Membership Failures](https://improve.xmtp.org/t/incident-report-invalid-keypackage-handling-group-membership-failures/900)

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**Author:** [@mojtaba](https://improve.xmtp.org/u/mojtaba)\
**Replies:** 4\
**Last updated:** [February 9, 2026, 6:22am UTC](https://improve.xmtp.org/t/incident-report-invalid-keypackage-handling-group-membership-failures/900 "2026-02-09T06:22:28Z")

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Date: March 28, 2025 Impact: Broken group experience for groups with members with old installations that had invalid KeyPackages Status: Resolved Summary A race condition in key package validation logic led to inconsi…

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## [How to Rotate an Inbox ID with XMTP JS SDK?](https://improve.xmtp.org/t/how-to-rotate-an-inbox-id-with-xmtp-js-sdk/2076)

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**Author:** [@adek](https://improve.xmtp.org/u/adek)\
**Replies:** 2\
**Last updated:** [February 2, 2026, 7:06am UTC](https://improve.xmtp.org/t/how-to-rotate-an-inbox-id-with-xmtp-js-sdk/2076 "2026-02-02T07:06:58Z")

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I’m working with the XMTP JS SDK and need to understand how to rotate an inbox ID when approaching or reaching the 256 inbox updates limit. According to the \[documentation on managing inboxes\](Manage XMTP inboxes, ident…

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## [SDK Performance & Reliability](https://improve.xmtp.org/t/sdk-performance-reliability/892)

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**Author:** [@Fabrizio\_Guespe](https://improve.xmtp.org/u/Fabrizio_Guespe)\
**Replies:** 0\
**Last updated:** [March 14, 2025, 10:54pm UTC](https://improve.xmtp.org/t/sdk-performance-reliability/892 "2025-03-14T22:54:09Z")

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We’re pleased to present the results of our detailed assessment of the XMTP protocol’s reliability and performance. This analysis offers clear insights into how the messaging protocol performs across various SDKs, focusi…