- 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
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
/0covers the entire IPv4 addressing space
- The smallest network, with mask
/32covers 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
/16for 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