fix(sdk): limit JWKS cache size on defineSandboxProxy - #309
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marc-vercel
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Aug 20, 2026
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This PR was opened by the [Changesets release](https://github.com/changesets/action) GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to main, this PR will be updated. # Releases ## sandbox@4.1.0 ### Minor Changes - Add multi-region support: ([#301](#301)) - New `region` and `failoverRegions` options on sandbox create, fork, and update (SDK), with matching flags on `sandbox create`, `fork`, `run`, `sh`, and the `sandbox config region` / `sandbox config failover-regions` commands (CLI). - New `failoverRegions` getter on `Sandbox` and `regions` getter on `Snapshot`. - Regions are now shown in `sandbox ls`, `sessions list`, `snapshots list`/`get`, `sandbox config list`, and the create/fork summary. ### Patch Changes - Accept `none` for `--failover-regions` on `sandbox create`, `sandbox run` and `sandbox fork`. ([#310](#310)) `sandbox config failover-regions <name> none` already clears the list, but at creation time `none` was forwarded as a literal region name and rejected by the API. With a project-level default failover list there was no way to create a sandbox in one of those regions from the CLI, while the SDK and the HTTP API both accept an empty `failoverRegions` array. The `none` sentinel is now shared between `create`/`run`/`fork` and `config`. - `Sandbox.region` and `Sandbox.failoverRegions` no longer return `undefined`: the getters now report the platform defaults (`iad1` and `[]`) when the API omits the fields, so their types are `string` and `string[]`. The new `DEFAULT_SANDBOX_REGION` export makes the default region readable. ([#301](#301)) - Updated dependencies [[`2997ecc32a77c145289fbbd89ae2dc0214767ae3`](2997ecc), [`2997ecc32a77c145289fbbd89ae2dc0214767ae3`](2997ecc), [`2023195eafe3199c2372f7dad8bfaf0878267c52`](2023195)]: - @vercel/sandbox@3.1.0 ## @vercel/sandbox@3.1.0 ### Minor Changes - Add multi-region support: ([#301](#301)) - New `region` and `failoverRegions` options on sandbox create, fork, and update (SDK), with matching flags on `sandbox create`, `fork`, `run`, `sh`, and the `sandbox config region` / `sandbox config failover-regions` commands (CLI). - New `failoverRegions` getter on `Sandbox` and `regions` getter on `Snapshot`. - Regions are now shown in `sandbox ls`, `sessions list`, `snapshots list`/`get`, `sandbox config list`, and the create/fork summary. - `Sandbox.region` and `Sandbox.failoverRegions` no longer return `undefined`: the getters now report the platform defaults (`iad1` and `[]`) when the API omits the fields, so their types are `string` and `string[]`. The new `DEFAULT_SANDBOX_REGION` export makes the default region readable. ([#301](#301)) ### Patch Changes - Update `defineSandboxProxy` to limit the JWKS issuer cache size to prevent unbounded memory usage. ([#309](#309)) ## @vercel/sandbox-mock@3.1.0 ### Minor Changes - Add multi-region support: ([#301](#301)) - New `region` and `failoverRegions` options on sandbox create, fork, and update (SDK), with matching flags on `sandbox create`, `fork`, `run`, `sh`, and the `sandbox config region` / `sandbox config failover-regions` commands (CLI). - New `failoverRegions` getter on `Sandbox` and `regions` getter on `Snapshot`. - Regions are now shown in `sandbox ls`, `sessions list`, `snapshots list`/`get`, `sandbox config list`, and the create/fork summary. - `Sandbox.region` and `Sandbox.failoverRegions` no longer return `undefined`: the getters now report the platform defaults (`iad1` and `[]`) when the API omits the fields, so their types are `string` and `string[]`. The new `DEFAULT_SANDBOX_REGION` export makes the default region readable. ([#301](#301)) ### Patch Changes - Updated dependencies [[`2997ecc32a77c145289fbbd89ae2dc0214767ae3`](2997ecc), [`2997ecc32a77c145289fbbd89ae2dc0214767ae3`](2997ecc), [`2023195eafe3199c2372f7dad8bfaf0878267c52`](2023195)]: - @vercel/sandbox@3.1.0 Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
marc-vercel
pushed a commit
that referenced
this pull request
Aug 21, 2026
This PR was opened by the [Changesets release](https://github.com/changesets/action) GitHub action. When you're ready to do a release, you can merge this and the packages will be published to npm automatically. If you're not ready to do a release yet, that's fine, whenever you add more changesets to drives-beta, this PR will be updated.⚠️ ⚠️ ⚠️ ⚠️ ⚠️ ⚠️ `drives-beta` is currently in **pre mode** so this branch has prereleases rather than normal releases. If you want to exit prereleases, run `changeset pre exit` on `drives-beta`.⚠️ ⚠️ ⚠️ ⚠️ ⚠️ ⚠️ # Releases ## sandbox@4.1.0-beta.1 ### Minor Changes - Add multi-region support for drives: ([#307](#307)) - Set the `region` field when creating a new drive, or use the `--region` flag in the CLI. - You can retrieve the region of a drive using the `region` getter on the `Drive` class. - Drives can be only be mounted to sandboxes running on the same region. - Add multi-region support: ([#301](#301)) - New `region` and `failoverRegions` options on sandbox create, fork, and update (SDK), with matching flags on `sandbox create`, `fork`, `run`, `sh`, and the `sandbox config region` / `sandbox config failover-regions` commands (CLI). - New `failoverRegions` getter on `Sandbox` and `regions` getter on `Snapshot`. - Regions are now shown in `sandbox ls`, `sessions list`, `snapshots list`/`get`, `sandbox config list`, and the create/fork summary. ### Patch Changes - `Sandbox.region` and `Sandbox.failoverRegions` no longer return `undefined`: the getters now report the platform defaults (`iad1` and `[]`) when the API omits the fields, so their types are `string` and `string[]`. The new `DEFAULT_SANDBOX_REGION` export makes the default region readable. ([#301](#301)) - Updated dependencies [[`c2b5d7b45340b485264abb82f0cd640ed4e93293`](c2b5d7b), [`2997ecc32a77c145289fbbd89ae2dc0214767ae3`](2997ecc), [`2997ecc32a77c145289fbbd89ae2dc0214767ae3`](2997ecc), [`2023195eafe3199c2372f7dad8bfaf0878267c52`](2023195)]: - @vercel/sandbox@3.1.0-beta.1 ## @vercel/sandbox@3.1.0-beta.1 ### Minor Changes - Add multi-region support for drives: ([#307](#307)) - Set the `region` field when creating a new drive, or use the `--region` flag in the CLI. - You can retrieve the region of a drive using the `region` getter on the `Drive` class. - Drives can be only be mounted to sandboxes running on the same region. - Add multi-region support: ([#301](#301)) - New `region` and `failoverRegions` options on sandbox create, fork, and update (SDK), with matching flags on `sandbox create`, `fork`, `run`, `sh`, and the `sandbox config region` / `sandbox config failover-regions` commands (CLI). - New `failoverRegions` getter on `Sandbox` and `regions` getter on `Snapshot`. - Regions are now shown in `sandbox ls`, `sessions list`, `snapshots list`/`get`, `sandbox config list`, and the create/fork summary. - `Sandbox.region` and `Sandbox.failoverRegions` no longer return `undefined`: the getters now report the platform defaults (`iad1` and `[]`) when the API omits the fields, so their types are `string` and `string[]`. The new `DEFAULT_SANDBOX_REGION` export makes the default region readable. ([#301](#301)) ### Patch Changes - Update `defineSandboxProxy` to limit the JWKS issuer cache size to prevent unbounded memory usage. ([#309](#309)) ## @vercel/sandbox-mock@3.1.0-beta.1 ### Minor Changes - Add multi-region support: ([#301](#301)) - New `region` and `failoverRegions` options on sandbox create, fork, and update (SDK), with matching flags on `sandbox create`, `fork`, `run`, `sh`, and the `sandbox config region` / `sandbox config failover-regions` commands (CLI). - New `failoverRegions` getter on `Sandbox` and `regions` getter on `Snapshot`. - Regions are now shown in `sandbox ls`, `sessions list`, `snapshots list`/`get`, `sandbox config list`, and the create/fork summary. - `Sandbox.region` and `Sandbox.failoverRegions` no longer return `undefined`: the getters now report the platform defaults (`iad1` and `[]`) when the API omits the fields, so their types are `string` and `string[]`. The new `DEFAULT_SANDBOX_REGION` export makes the default region readable. ([#301](#301)) ### Patch Changes - Add mock for the `Drive` class. ([#307](#307)) - Updated dependencies [[`c2b5d7b45340b485264abb82f0cd640ed4e93293`](c2b5d7b), [`2997ecc32a77c145289fbbd89ae2dc0214767ae3`](2997ecc), [`2997ecc32a77c145289fbbd89ae2dc0214767ae3`](2997ecc), [`2023195eafe3199c2372f7dad8bfaf0878267c52`](2023195)]: - @vercel/sandbox@3.1.0-beta.1 Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
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This PR adds an LRU cache instead of a simple
Mapfor the JWKS cache ofdefineSandboxProxyto prevent unbounded memory growth. The max size of 100 issuers is arbitrary but a good balance to prevent high memory usage/high number of open sockets while still avoiding to create new issuers all the time