Cannot upload cache to Azure Blob (getting : "413 The request body is too large and exceeds the maximum permissible limit.")
## Summary
When using the `[runners.cache.azure]`, and if the file is exceeding a certain size (not sure yet what size, I'm trying to find some elements in the documentation), the cache will fail with the following message:
## Actual behavior
The cache might be failing because of Azure blob storage limitation.
## Expected behavior
We might have to use "chunked upload" to upload the cache when exceeding a certain limit
## Relevant logs and/or screenshots
(text:)
```
Saving cache
02:02
Creating cache e5c3ef9838d165f51d91c13e47efd7df65ee8eef...
node_modules/: found 82486 matching files and directories
.yarn-cache/: found 76412 matching files and directories
.cypress-cache/: found 39144 matching files and directories
.node-sass-cache/: found 3 matching files and directories
Uploading cache.zip to https://xxxxx.blob.core.windows.net/gitlab-cache/runner/J1jMMku-/project/103/e5c3ef9838d165f51d91c13e47efd7df65ee8eef
FATAL: received: 413 The request body is too large and exceeds the maximum permissible limit.
Failed to create cache
Uploading artifacts for successful job
00:39
Uploading artifacts...
```
## Environment description
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<details>
<summary> config.toml contents </summary>
```toml
log_format = "json"
listen_address = "0.0.0.0:9252"
[session_server]
session_timeout = 1800
[[runners]]
name = "aks-runner"
url = "https://xxxxx/"
token = "xxxx"
executor = "kubernetes"
environment = ["K8S_AUTH_KUBECONFIG=/home/ops/.kube/config"]
[runners.custom_build_dir]
[runners.cache]
Type = "azure"
[runners.cache.azure]
StorageDomain = "blob.core.windows.net"
AccountName = "xxxxx"
AccountKey = "xxxxx"
ContainerName = "gitlab-cache"
[runners.kubernetes]
namespace = "gitlab-jobs"
namespace_overwrite_allowed = ""
cpu_request = "200m" # https://docs.gitlab.com/runner/executors/kubernetes.html#overwriting-build-resources
cpu_request_overwrite_max_allowed = "2"
memory_request = "200Mi"
memory_request_overwrite_max_allowed = "2Gi"
privileged = false
poll_timeout = 360
host = ""
bearer_token_overwrite_allowed = false
image = ""
pull_policy = "always"
service_account = ""
service_account_overwrite_allowed = ""
pod_annotations_overwrite_allowed = ""
image_pull_secrets = [ "acrpullsecret" ]
cpu_limit = "2"
cpu_limit_overwrite_max_allowed = "4"
memory_limit = "2Gi"
memory_limit_overwrite_max_allowed = "4Gi"
[runners.kubernetes.pod_security_context]
[runners.kubernetes.volumes]
```
</details>
### Used GitLab Runner version
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a Runner where you don't have access to, please paste at least the first lines
the from build log, like:
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```
Running with gitlab/gitlab-runner:v13.4.1
```
## Possible fixes
Implement chunk upload for Azure blob.
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(If you can, link to the line of code that might be responsible for the problem)
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issue