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  • Canary testing:
    • at Google, using a subset of real traffic to test the production performance of a new version
    • Elsewhere: serving a release to a predefined test population, as opposed to A/B which is statistics-based
  • CIDR = Classless Inter-Domain Routing
    • A 1993 replacement for the legacy class-based (A, B, C..) IPv4 addressing architecture, replacing the old fixed size network addresses by sizes defined as powers of two, leading to the x.y.z.t/nn notation (1 < nn < 23), describing the number of bits making up the network part in an IP address, starting from the leftmost bits.
    • The largest network, with mask /0 covers the entire IPv4 addressing space
    • The smallest network, with mask /32 covers a single IPv4 address
    • In practice, GCP networks need a minimum of 4 reserved IP addresses, hence 8 to be practical, for a smallest network mask of 32-log2(8) = /29, and the largest network is a /16 for 64 addresses.
    • Standardized as RFC 4632
  • Cloud Load Balancing
    • An umbrella product for GCP load balancing offerings
    • See Maglev
  • Compute Engine instance: a VM hosted on Google's infrastructure
    • Includes GKE clusters, AppEngine flexible environment instances, and other products build on Compute Engine VMs.
  • Cascading Failures: when one component fails to work, and alternate systems pick up the load, then get overwhelmed too.
    • Protect with degraded results, load shedding, graceful degradation
  • CFE = Cloud Front End.
    • Customer equivalent of GFE.
  • CNCF = Cloud Native Computing Foundation
  • Correlated Failures: when related items fail simultaneously
    • Reduce impact by containerizing apps and implementing microservices that can run on multiple platforms. Ideally multi-zone or multi-region.
gcp/c.txt · Last modified: 2023/05/22 19:03 by fgm