Comment by diggan

10 hours ago

> It's generally speaking part of the problem with the entire "XML as a savior" mindset of that earlier era and a big reason of why we left them

Generally speaking I feel like this is true for a lot of stuff in programming circles, XML included.

New technology appears, some people play around with it. Others come up with using it for something else. Give it some time, and eventually people start putting it everywhere. Soon "X is not for Y" blogposts appear, and usage finally starts to decrease as people rediscover "use the right tool for the right problem". Wait yet some more time, and a new technology appears, and the same cycle begins again.

Seen it with so many things by now that I think "we'll" (the software community) forever be stuck in this cycle and the only way to win is to explicitly jump out of the cycle and watch it from afar, pick up the pieces that actually make sense to continue using and ignore the rest.

A controversial opinion, but JSON is that too. Not as bad as XML was (̶t̶h̶e̶r̶e̶'̶s̶ ̶n̶o̶ ̶"̶J̶S̶L̶T̶"̶)̶, but wasting cycles to manifest structured data in an unstructured textual format has massive overhead on the source and destination sides. It only took off because "JavaScript everywhere" was taking off — performance be damned. Protobufs and other binary formats already existed, but JSON was appealing because it's easily inspectable (it's plaintext) and easy to use — `JSON.stringify` and `JSON.parse` were already there.

We eventually said, "what if we made databases based on JSON" and then came MongoDB. Worse performance than a relational database, but who cares! It's JSON! People have mostly moved away from document databases, but that's because they realized it was a bad idea for the majority of usecases.

  • Both XML and JSON were poor replacements for s-expressions. Combined with Lisp and Lisp macros, a more powerful data manipulation text format and language has never been created.

  • Yup, agree with everything you said!

    I think the only left out part is about people currently believing in the current hyped way, "because this time it's right!" or whatever they claim. Kind of the way TypeScript people always appear when you say that TypeScript is currently one of those hyped things and will eventually be overshadowed by something else, just like the other languages before it, then soon sure enough, someone will share why TypeScript happen to be different.

  • The fact that you bring up protobufs as the primary replacement for JSON speaks volumes. It's like you're worried about a problem that only exists in your own head.

    >wasting cycles to manifest structured data in an unstructured textual format

    JSON IS a structured textual format you dofus. What you're complaining about is that the message defines its own schema.

    >has massive overhead on the source and destination sides

    The people that care about the overhead use MessagePack or CBOR instead.

    I personally hope that I will never have to touch anything based on protobufs in my entire life. Protobuf is a garbage format that fails at the basics. You need the schema one way or another, so why isn't there a way to negotiate the schema at runtime in protobuf? Easily half or more of the questionable design decisions in protobuffers would go away if the client retrieved the schema at runtime. The compiler based workflow in Protobuf doesn't buy you a significant amount of performance in the average JS or JVM based webserver since you're copying from a JS object or POJO to a native protobuf message anyway. It's inviting an absurd amount of pain for essentially zero to no benefits. What I'm seeing here is a motte-bailey justification for making the world a worse place. The motte being the argument that text based formats are computationally wasteful, which is easily defended. The bailey being the implicit argument that hard coding the schema the way protobuf does is the only way to implement a binary format.

    Note that I'm not arguing particularly in favor of MessagePack here or even against protobuf as it exists on the wire. If anything, I'm arguing the opposite. You could have the benefits of JSON and protobuf in one. A solution so good that it makes everything else obsolete.

    • I didn't say protobufs were a valid replacement - you only think I did. "Protobufs and other binary formats already existed, [..]". I was only using it as an example of a binary format that most programmers have heard of; More people know of protobufs than MessagePack and CBOR.

      Please avoid snark.

There have been many such cycles, but the XML hysteria of the 00s is the worst I can think of. It lasted a long time and the square peg XML was shoved into so many round holes.