Migration Testimonials
Learn from the experiences of developers and teams who have successfully navigated the transition away from Eventlet. These testimonials provide valuable insights into real-world migration challenges, strategies, and outcomes.
Arnaud Morin
Cloud DevOps & Virtualization Evangelist at OVH, OpenStack Contributor
Shares his experience migrating OpenStack Mistral from Eventlet to threading-based solutions, focusing on incremental approaches and practical challenges.
Julia Kreger
Senior Principal Software Engineer at Red Hat, Chair of the OpenStack Governing Board
Julia Kreger played a key role in guiding the Ironic community’s migration away from Eventlet, improving stability, scalability, performance, and long-term maintainability through collaboration and incremental change.
Daniel Bengtsson
Software Engineer at Red Hat, OpenStack Contributor
Daniel Bengtsson led the overhaul of oslo.service, deeply replacing its Eventlet-based backend with a threading + futurist + cotyledon solution while preserving API compatibility, improving stability, maintainability, and Python 3.12+ support.
Jay Faulkner
Open Source Developer at GR-OSS, OpenStack Contributor & Former Technical Commitee Member
As an OpenStack Technical Committee (TC) member, Jay Faulkner guided the Ironic community through the migration away from Eventlet, ensuring alignment, coordination, and long-term stability while delivering performance gains and reduced technical risk.
Dmitry Tantsur
Senior Software Engineer at Red Hat, OpenStack contributor
Dmitry Tantsur led Ironic’s migration away from Eventlet, replacing deeply-integrated eventlet usage (green threads, monkey-patching, WSGI, etc.) with a threaded backend using Futurist and other alternatives, doing so incrementally and pragmatically to improve stability, avoid Eventlet-specific bugs, and reduce long-term risk.
Share Your Experience
Have you successfully migrated a project from Eventlet? We'd love to hear about your experience and share your insights with the community.