first of all, I tried to save short content data to my backend and it was fine. But when the content get bigger i can’t save anymore. Also, Could that happend because I migrate some field before like adding new field or removing field in the struct ? I think that because locally i ran dfx deploy bac…

I just added const BOUND: Bound = Bound::Bounded { max_size: 9999999, is_fixed_size: false, }; but still not getting any results

I think you should consider rethinking the storage strategy and mimic that of a regular file system. Separate the metadata structure from the actual blocks of a file. Metadata structure Stored as a stable BTreeMap<filename, metadata> Contains file name etc Contains a block index, a fixed size vec…

[image] kristofer: not a good idea to store an item with unknown size (ContentNodeVec) If I remember correctly, that limitation was lifted. It now stores values that are too big like a linked list under the hood as far as I’ve read. Still curious to know what caused the possible stable struc…

[image] sea-snake: If I remember correctly, that limitation was lifted. It now stores values that are too big like a linked list under the hood as far as I’ve read. Any idea where you read that? Docs and library both references the tutorial by Roman that states: [image] kristofer: The B…

@kristofer can you give me any code example please? do u mean making small blocks of the actual data . So the issue is a matter of size only static FILE_CONTENTS: RefCell<StableBTreeMap<String, ContentNodeVec, Memory>> = RefCell::new( StableBTreeMap::init( MEMORY_MANAGER.…

[image] kristofer: Any idea where you read that? [image] Stable Structures: Removing the Bounded Size Requirement Developers Hey everyone, Stable structures is a Rust library built by DFINITY that allows canister developers to store tens of GiBs of data without the…

[image] AliSci: [Canister bkyz2-fmaaa-aaaaa-qaaaq-cai] Panicked at 'Attempting to allocate an already allocated chunk.', /Users/ahmed/.cargo/registry/src/index.crates.io-6f17d22bba15001f/ic-stable-structures-0.6.5/src/btreemap/allocator.rs:166:9 This error indicates that there’s some kind of …

[image] AliSci: ContentNodeVec I did changed the bound but not of the content vector. However, it still work fine, but content vector does not work anymore. [Screenshot 2025-01-21 at 5.41.54 PM]

How to make sure this never happen in future? How to get better error message instead of that undefined things ? Ok how to reset only one of my statics, I want to chose this and empty it. [Screenshot 2025-01-21 at 5.46.41 PM]

@ielashi if we put the upgrade issues aside, is the storage layout as described by @AliSci ok? Looks like FILE_CONTENTS can be simplified to store a Vec<ContentNode> instead of a ContentNodeVec with a HashMap containing the Vec<ContentNode>. ps. We need to update docs to better describe the behavi…

Error storing in ic stable structure

Developers

sea-snake January 21, 2025, 9:17am 11

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Using stable-structures: Increasing size limits and dropping the stable collection? Rust	11	898	August 13, 2025
StableBTreeMap in Canisters Rust	17	2018	August 3, 2023
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Error storing in ic stable structure

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