Cost of Mutable Data

[anon71598723]

Just to remember, this was we had:

• unversioned SD: pay to create it, don’t pay to update, you can store up to 100k;
• Immutable: pay to create it (same price as SD), you can’t update, you can store up to 1MB;

In short: SD costs 10x more but you can update it for free.

Now, considering that SD will be replaced by this new type, Mutable Data, I wonder how it will be charged.

The new MD type can store up to 1MB (same as an Immutable), so dynamic data won’t be 10x more expensive anymore. But what about updates? Will it continue being for free?

[anon81773980]

unversioned SD: pay to create it, don’t pay to update, you can store up to 100k;

Not sure where you got that idea.

Any update to the SD/MD requires put. You still have to pay for the put.

So no, updates are not free.

[anon71598723]

Are you sure? Actually, I’m not sure now, and please correct me if I’m wrong. Is just that I saw some references here in the forum and then I conclude that unversioned SD updates were for free:

@neo

I assume you know SD only costs when you create it, rewrites are free of cost.

@Seneca

The network won’t charge you for updating the info in a StructuredData object.

@neo

I said this once, and David corrected me, the messaging is free. The initial purchase of the SD used for the outbox is one put. Just like rewrites of puts are free so are the message writes

@mav

Since the cost to update structured data is zero, it’s worth investigating the impact of high loads on the network, and what the transaction rate of SafeCoin may be.

@neo

Messages use the SD objects for small messages and datamap to large data/messages. SDs cost nothing to rewrite.

@happybeing

@Al_Kafir SD means Structured Data. It’s a form of storage in SAFE that can be updated without charge, but costs several times more for the initial PUT.

[anon81773980]

ah okay. I’ll take that back.

I always thought we must pay for the puts