4 ms·

Where would this be useful? I am not trying to bring the article down but I'm genuinely interested in knowing where/how people would use this. It seems like jus

Where would this be useful? I am not trying to bring the article down but I'm genuinely interested in knowing where/how people would use this. It seems like just locally modifying a payload would be more efficient?

Hamuko 4y ago
Kustomize patches.
mathgladiator 4y ago
JSON merge ( https://datatracker.ietf.org/doc/html/rfc7386 https://datatracker.ietf.org/doc/html/rfc7386 ) is the entire basis for how I persist document changes to disk and to clients ( http://www.adama-platform.com/2021/03/28/json.html http://www.adama-platform.com/2021/03/28/json.html ). Arrays require some care to handle which is why I'm got some extensions in my client, but a super power that JSON patching enables is that it can be algebraic in nature. That it, we can define a patching which is associative (another extension where you preserve nulls) such that (X + da) + db = X + (da + db) = X + dc where da + db + dc This allows you to leverage flow control when congestion happens (especially on mobile connections).
nigma1337 4y ago
Using it for k8s currently, in a request like [{"op": "replace", "path":"/spec/template/metadata/annotations/restarted-at", "value": "'$(date -Iseconds)'"}] to restart/redeploy.
kgeist 4y ago
I can think of realtime collaborative document editing - patches are sent to the server instead of sending the whole JSON-based document every time and the app resolves potential conflicts.
- chii 4y ago
  But i wonder if you have to use a very long pointer expression to identify a single character being typed, you'd end up with much higher overhead.
EdwardDiego 4y ago
I've used it with K8s and kustomize a fair bit.
jurple 4y ago
We have a supplier who uses it to distribute daily updates to their (large) product catalog. It helps that most of the mutations are to specific fields like availability and price, while EAN/GTIN etc tend to be stable. Deletions are trivial as well.
coredog64 4y ago
Amazon uses this for changes to API Gateway. Take that as either a positive or a negative :)
wvh 4y ago
Software such as Kubernetes uses it with different processes writing to the same data fields, but different subsets. If you have a typical API with only one main blob that gets updated in its entirety, you might not avoid conflicts using the PATCH approach.

Hamuko 4y ago

Kustomize patches.

mathgladiator 4y ago

JSON merge ( https://datatracker.ietf.org/doc/html/rfc7386 https://datatracker.ietf.org/doc/html/rfc7386 ) is the entire basis for how I persist document changes to disk and to clients ( http://www.adama-platform.com/2021/03/28/json.html http://www.adama-platform.com/2021/03/28/json.html ). Arrays require some care to handle which is why I'm got some extensions in my client, but a super power that JSON patching enables is that it can be algebraic in nature. That it, we can define a patching which is associative (another extension where you preserve nulls) such that (X + da) + db = X + (da + db) = X + dc where da + db + dc This allows you to leverage flow control when congestion happens (especially on mobile connections).

nigma1337 4y ago

Using it for k8s currently, in a request like [{"op": "replace", "path":"/spec/template/metadata/annotations/restarted-at", "value": "'$(date -Iseconds)'"}] to restart/redeploy.

kgeist 4y ago

I can think of realtime collaborative document editing - patches are sent to the server instead of sending the whole JSON-based document every time and the app resolves potential conflicts.

chii 4y ago
But i wonder if you have to use a very long pointer expression to identify a single character being typed, you'd end up with much higher overhead.

EdwardDiego 4y ago

I've used it with K8s and kustomize a fair bit.

jurple 4y ago

We have a supplier who uses it to distribute daily updates to their (large) product catalog. It helps that most of the mutations are to specific fields like availability and price, while EAN/GTIN etc tend to be stable. Deletions are trivial as well.

coredog64 4y ago

Amazon uses this for changes to API Gateway. Take that as either a positive or a negative :)

wvh 4y ago

Software such as Kubernetes uses it with different processes writing to the same data fields, but different subsets. If you have a typical API with only one main blob that gets updated in its entirety, you might not avoid conflicts using the PATCH approach.