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DZone > Database Zone > Sharding Status for Failure Scenarios: API Design with RavenDB

Sharding Status for Failure Scenarios: API Design with RavenDB

Oren Eini user avatar by
Oren Eini
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May. 30, 12 · Database Zone · Interview
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an interesting question came up recently. how do we want to handle sharding failures?

for example, let us say that i have a 3 nodes clusters of ravendb, serving posts for a blog (just to give some random example). the way the sharding has been setup, we are doing sharding using round robin based on posts (so each post goes to a different machine, and anything related to post goes to the same node as the post). here is how it can be set:

image

now, we want to display the main page, and we would like to show the most recent posts. we can do this using the following code:

image

the question is, what would happen if the second server if offline?

i’ll give several alternative in the next few posts.

API Design

Published at DZone with permission of Oren Eini, DZone MVB. See the original article here.

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