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Consensus Team Update

· One min read
Damian Nadales
Damian Nadales
Consensus Team Lead

High level summary​

  • Merged the Genesis Documentation (#1174). Its rendered version can be found here.
  • Fixed a chain sync jumping test failure, and introduce some minor improvements (#1417).
  • Merged the first draft describing Era Transition Governance (#1408).
  • Added a block diagram of a full block.

Hydra Team Update

· 2 min read
Noon van der Silk
Noon van der Silk
Software Engineering Lead

High-level summary​

The team is very excited to have relased the work on reducing the memory footprint of the Hydra node by merging #1618. This has been tested and appears to make a huge impact to long-running Hydra nodes with many transactions. We invite the community to test it more! We also made a couple of hotfixes and documentation improvements.

What did the team achieve?​

  • Merged work on reduced memory footprint for running a Hydra Node #1618
  • Progress on "side-load" of a snapshot #1858
  • Updated documentation for persistence cleaning #1899
  • Fixed a bug where the TUI wasn't getting enough history #1901
  • Allowed for etcd arguments to be passed on #1891; useful for controlling etcd more explicitly.
  • Added /snapshot/last-seen endpoint to query the latest snapshot #1886

What's next?​

  • Finish side-loading snapshots #1858
  • Tighten security options of the networking layer #1867
  • Publishing scripts with blockfrost #1668

Mithril Team Update

· 2 min read
Jean-Philippe Raynaud
Jean-Philippe Raynaud
Mithril Tech Lead

High level overview​

This week, the Mithril team continued working on the aggregator's prototype 'slave' mode to support signer registration across multiple aggregators. This feature is being stabilized and tested. They also focused on implementing incremental certification of the Cardano database, emphasizing feature stabilization, production readiness, testing, and optimization. Additionally, the team started refactoring the cryptographic library to improve clarity and maintainability and kept working on signing ancillary files in the Cardano database snapshots with an IOG key.

Finally, the team enhanced the database tooling for migration and maintenance and fixed some flakiness in the CI.

Low level overview​

  • Completed the issue Compress the digests file uploaded on GCP for Incremental Cardano DB #2356
  • Completed the issue Database vacuum is blocking aggregator API at epoch transition #2364
  • Completed the issue Database migration checks minimum node version if next migration is squashed #2357
  • Completed the issue Some unit tests in the CI are flaky #2360
  • Worked on the issue E2e tests adaptation for multiple aggregators #2361
  • Worked on the issue Sign ancillary files with IOG key #2362
  • Worked on the issue Use a macro to implement the Source trait #2365
  • Worked on the issue Re-organize STM library structure #2369
  • Worked on the issue Upgrade to Cardano 10.2 #2333

Network Team Update

· 3 min read
Marcin Szamotulski
Marcin Szamotulski
Network Team Lead

Overview of sprint 83​

High-level overview​

SRV support (Cardano, Mithril)​

We merged ouroboros-network#5018 which adds support for SRV in ouroboros-network. However, we still need to make a decision whether we require that all Cardano SRVs start with _cardano._tcp, or we leave it open for the future. The former would allow us to use SRVs for different applications, e.g. _mithril._tcp for the mithril diffusion. If that would be the case then we'd prepend _cardano._tcp to what we find in the SRV field of a registration certificate, e.g. prepend _cardano._tcp by cardano-node's diffusion, and _mithril._tcp by the mithril diffusion. The other possibility is to extend the registration certificate to include the addresses of mithril nodes.

Mithril​

We started working on a development plan for Mithril diffusion, [ref][mithirl-diffusion] (note that this is a work in progress).

We also have been working on moving network-related code from the cardano-node to the cardano-diffusion library in ouroboros-network. In the future, this will allow us to share parts of it in the Mithril diffusion [ouroboros-newtork#5082].

Documentation​

We improved our CDDL specifications by annotating which codecs require definite / in-definite encoding of lists & maps, see ouroboros-network#5089.

Mux​

Karl Knutsson (CF) has been working on performance improvements in the multiplexer (network-mux library), ouroboros-network#5093.

Server-side performance considerations​

Karl Kntusson (CF) noticed a performance bottleneck in the responder (server) side of the p2p diffusion layer. We've started working on addressing this issue.

Tx-Submission logic​

We continued reviewing/improving the tx-submission PR ouroboros-network#4887.

Pull requests​

In review​

Work in Progress​

Merged​

Node API & CLI Team Update

· 2 min read
Jordan Millar
Jordan Millar
Node Team Lead

2025-03-01T00:00:00Z - 2025-03-15T00:00:00Z

High level summary​

cardano-cli​

cardano-api​

cardano-node​

cardano-testnet​

  • None

docs​

  • None

CI & project maintenance​

  • None