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GitHub announced the GitHub Enterprise Server (GHES) 3.9 release candidate on June 8, 2023. It previewed runner autoscaling, Projects improvements, REST API versioning, and logging changes—but it was intended for testing outside production, not live deployment. GHES 3.9 is now discontinued: GitHub lists June 29, 2024, as its support end date.
What GHES 3.9 highlighted
The release-candidate announcement covered four main areas. These were previews of what administrators and engineering teams could evaluate in a test environment, rather than a recommendation to deploy the candidate.
- Autoscaling self-hosted Actions runners: Administrators could configure autoscaling with Actions Runner Controller and runner scale sets.
- Projects public beta: GitHub said the beta had received improvements for planning and tracking work.
- REST API versioning: Clients could select an API version for each request using a release date as the version identifier. GitHub said each API version would be supported for two years.
- Logging conventions: GitHub changed many logging field names as part of a gradual move toward internal semantic conventions for OpenTelemetry.
These changes made the candidate relevant to teams assessing runner capacity, project planning workflows, API client compatibility, or log-processing and observability pipelines. The announcement did not provide a quantified performance impact for the logging changes or a universal estimate for runner capacity gains.
Why GitHub advised against production use
GitHub described release candidates as proposed feature releases with a complete feature set, but warned that issues might emerge only through customer use. Its guidance was to evaluate a candidate in a new test environment. Administrators should not install it in production, upgrade a supported earlier version to it, or upgrade from the candidate to a later release.
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- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
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For a historical evaluation, teams could use staging to check workflows and integrations against the changes: runner autoscaling behavior, Projects usage, API requests with explicit version selection, and logging consumers that depend on field names. Those checks are evaluation considerations based on the announced changes, not test results reported by GitHub.
MySQL 8.0 made upgrade testing important
GHES 3.9 upgraded MySQL from version 5.7 to 8.0. GitHub warned that the change could increase I/O utilization. The versioned release notes also warn that upgrades from GHES 3.7 or 3.8 to 3.9 could affect instance performance, and that MySQL might fail to restart after some upgrades.
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- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
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GitHub did not give a general percentage for the I/O increase or performance effect. The impact therefore cannot be predicted from the release announcement alone; it depends on the instance and upgrade circumstances. For administrators evaluating the release at the time, the database change called for checking I/O headroom and observing instance behavior in a suitable test environment before any production upgrade planning. The release candidate itself was not appropriate for production.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Is GHES 3.9 still supported?
No. GitHub’s versioned GHES 3.9 documentation lists June 29, 2024, as the discontinuation date and says no patch releases would follow. GHES 3.9 is therefore a historical release, not a currently supported deployment choice.
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- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
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- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
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- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
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- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
Key dates
| Milestone | Date or duration | What it means |
|---|---|---|
| Release-candidate announcement | June 8, 2023 | GitHub published the announcement describing the candidate. |
| API version support | Two years per version | Duration stated in the 2023 announcement; it applies to each API version, not to GHES 3.9 support. |
| GHES 3.9 discontinuation | June 29, 2024 | Date listed in GitHub’s versioned 3.9 documentation. |
Official references
- GitHub: GHES 3.9 release-candidate announcement
- GitHub: About upgrades to new releases
- GitHub: GHES 3.9 release notes and support information
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