A deep Java performance talk that I don’t have enough context for, by @PeterLawrey
Project Panama is about replacing JNI. Meantime, if you want to share memory between processes cleverly and safely, you can use their chronicle-bytes library. #QConLondon
“If you go down to the low level for too long, you wind up writing systems that can’t be altered.” @PeterLawrey#QConLondon
Observability means being able to see wtf is happening.
In the case of this library, that means being able to debug and see something more meaningful than a memory address; and test and diff YAML instead of binary.
A common “question” format: “When you were developing this, did you consider [alternative that I just thought about]?”
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I laugh at people who talk about “exactly-once delivery”
The specs that claim it have been proven wrong.
But we have methods (like idempotency) to do things well. @mjpt777#YowLondon
Make handover/resumption protocols.
“This is what I thought I sent to you last, did you get it?”
“Here’s what I got from you last, let’s work it out from there”
If we go from Idea to Behavior change to new Idea…
how quickly we can do that depends on the structure. @kentbeck
If we go Idea to Behavior to Idea to Behavior
as fast as we can,
it’s gonna get slower and slower and then the developers will get frustrated and leave and the new developers will be even slower…
So sometimes, we make a structure change before the behavior change. @KentBeck
SREs in the audience? (Dozens of hands)
Experienced SREs? (Like 2.5 hands)
We @RedHat used to ship products. Build a thing, package it, send to customers. Then it was their problem. Customer hires a consultant or figures it out.
Now we mostly ship services. Now it’s our headache, reliability and uptime etc. It’s different
The team deserves someone
who wants to manage people.
who is not bitter about meetings
who is interested in sociotechnical systems and nurturing careers
whose technical skills are strong enough to evaluate their work.