Spanning Tree (STP) on Virtual Switches
One of my readers sent me this question:
I'm researching NFV/SDN and wonder if the software L2 switches support spanning tree.
TL&DR: Some do, some don’t.
Read more ...One of my readers sent me this question:
I'm researching NFV/SDN and wonder if the software L2 switches support spanning tree.
TL&DR: Some do, some don’t.
Read more ...CloudFlare is excited to partner with Women Who Go to host Gopher Gala—the first distributed Go(lang) hackathon—in our San Francisco office!
Gopher Gala is a chance to showcase your skills and compete against the best Go developers from around the world.
While the hackathon is distributed globally, CloudFlare is welcoming teams to use our new office space in SOMA this Saturday and Sunday from 9am-5pm. There will be food, drinks, and plenty of space to spread out and work with your teammates. Some of CloudFlare’s top Go developers will be participating as well.
If you’d like to sign up for the event, you can do so here: http://www.meetup.com/Women-Who-Go/events/227017435/
So, come join Women Who Go and CloudFlare and build something in a weekend:
When
January 23rd: 9am-5pm
January 24th: 9am-5pm
Where
CloudFlare Headquarters
101 Townsend Street
San Francisco, CA 94107
These six steps can help you design the right technical team in your organization.
The post Six Solid Steps To Design Technical Teams appeared first on Packet Pushers.
These six steps can help you design the right technical team in your organization.
The post Six Solid Steps To Design Technical Teams appeared first on Packet Pushers.
Riverbed wants to replace traditional branch routers.
In the last blog we looked at PCE for centralized path-computation and PCEP as a communication protocol between PCE and PCC.We also looked at brief demo of PCE sending ERO’s (IP or SR Node labels) to the PCC(Head end). In this Blog post we will particularly try to focus at Traffic Engineering (SR-TE) aspects of […]
The post Yet Another Blog About Segment Routing, Part3: SR-TE appeared first on Packet Pushers.
In the last blog we looked at PCE for centralized path-computation and PCEP as a communication protocol between PCE and PCC.We also looked at brief demo of PCE sending ERO’s (IP or SR Node labels) to the PCC(Head end). In this Blog post we will particularly try to focus at Traffic Engineering (SR-TE) aspects of […]
The post Yet Another Blog About Segment Routing, Part3: SR-TE appeared first on Packet Pushers.
The Go test coverage implementation is quite ingenious: when asked to, the Go compiler will preprocess the source so that when each code portion is executed a bit is set in a coverage bitmap. This is integrated in the go test
tool: go test -cover
enables it and -coverprofile=
allows you to write a profile to then inspect with go tool cover
.
This makes it very easy to get unit test coverage, but there's no simple way to get coverage data for tests that you run against the main version of your program, like end-to-end tests.
The proper fix would involve adding -cover
preprocessing support to go build
, and exposing the coverage profile maybe as a runtime/pprof.Profile
, but as of Go 1.6 there’s no such support. Here instead is a hack we've been using for a while in the test suite of RRDNS, our custom Go DNS server.
We create a dummy test that executes main()
, we put it behind a build tag, compile a binary with go test -c -cover
and then run only that test instead of running the regular binary.
Here's what the rrdns_test.go
file looks like:
// +build Continue reading