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> In addition, Google has completely removed local storage from their servers, so there is no disk I/O at all. What does that mean? There should be disk somewh
by betaby 2y ago
> In addition, Google has completely removed local storage from their servers, so there is no disk I/O at all.
What does that mean? There should be disk somewhere anyway to store gmail messages.
- jeffbee 2y agohttps://static.googleusercontent.com/media/sre.google/en//static/pdf/CaseStudiesInfrastructureChangeManagement.pdf#page=27 https://static.googleusercontent.com/media/sre.google/en//st... It sounds a bit vanilla on paper, since things like NFS and iSCSI have existed forever.
- sirjee 2y agoUsually Google applications uses high level network storage services like collosus, BigTable or spanner and these high level services are backed by dedicated storage appliances where they bypass the kernel for SSDs and use direct block IO for slow disks. For network, they are moving towards userspace network [1]. [1] https://research.google/pubs/snap-a-microkernel-approach-to-host-networking/ https://research.google/pubs/snap-a-microkernel-approach-to-...