# EPF6 Dev Updates – Week 1 Hi! I'm participating permissionlessly in the fellowship program. I've been following the study group but got little late to be here. Now onwards, I'll stick to it consistently. In the previous weeks I've been exploring the concepts through study group, [epf.wiki](https://epf.wiki) and other resources and trying to contribute to clients to make me more prepared for the fellowship project. Initially, I explored various projects in the PandaOps tooling wishlist: p2p CL metrics, spamoor. p2p CL metrics seemed outdated and spamoor is being worked on currently. Then, I explored more projects: **Grandine Standalone Validator Client**, **FOCIL** ([EIP-7805](https://eips.ethereum.org/EIPS/eip-7805)) and **Lighthouse: Checkpoint sync from a non-finalized checkpoint** and **Lodestar: Backfill**. I've decided to deep dive into **Lodestar: Backfill** ([github issue](https://github.com/ChainSafe/lodestar/issues/7753)) and **Grandine: Additional database backends** which has been recently added. In the next week, I will deep dive into Grandine db implementation & Lodestar codebase, finalize one of these and start working on the proposal. Week 2 goals: --- Deep Dive into: https://github.com/grandinetech/grandine/blob/develop/database/src/lib.rs https://github.com/rust-rocksdb/rust-rocksdb https://github.com/spacejam/sled https://chainsafe.github.io/lodestar/run/beacon-management/syncing/ https://github.com/ethereum/consensus-specs/blob/dev/specs/phase0/p2p-interface.md https://lighthouse-book.sigmaprime.io/advanced_checkpoint_sync.html