32 lines
1.8 KiB
Text
32 lines
1.8 KiB
Text
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---
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title: Troubleshooting
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sidebar_position: 100
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---
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We have collected solutions to common issued faced by web mirrors users.
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If you are unable to resolve your issue, please [get in touch](/contact) with us to discuss the options.
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## Upstream Rate Limiting
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CDNs (Content Delivery Networks) can impose rate limiting or "bot detection" on websites to ensure that the network
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resources are efficiently utilized, to protect the websites from Denial of Service (DoS) attacks, and to
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maintain the quality of service for all the websites using the CDN.
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If you find that mirrors are producing many “Rate Limited Exceeded” or “Access Denied” errors then you may be suffering
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from this problem.
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These rate limits will be sized according to the expected rate of requests from an average user, however the mirror
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system is a bottleneck that aggregates requests from multiple users and passes these on to the original CDN.
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When a single system is used to send a large number of requests to a CDN like this, the CDN may interpret this as a
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DoS attack and prevent access to the website.
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The optimal approach is to configure the origin to use an alternative host for connections, so that the CDN is bypassed
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and the backend origin (web server) is used directly.
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The mirror will still be the access point for users and this will not reveal the location of the backend origin to your
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users.
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If this is not possible, then deploying mirrors for websites hosted on CDNs will require either configuration at, or
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co-operation from, the CDN provider.
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Additional headers can be configured for the origin to authenticate requests that originate from jasima.app, and these
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can be used to bypass the protection mechanisms at your CDN.
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Consult your CDN's documentation or contact their support team to configure using an additional header to disable the
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rate limiting for requests originating from jasima.app.
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