commit 0ff562854a83e70e28300a6580f6e0623d251529 parent 167def47b6b1136085fd3901a345fa9ff564dcb1 Author: lash <dev@holbrook.no> Date: Wed, 10 Jul 2024 00:28:51 +0100 Add store format readme Diffstat:
| A | eth_cache/store/README.lmdb.md | | | 37 | +++++++++++++++++++++++++++++++++++++ |
1 file changed, 37 insertions(+), 0 deletions(-)
diff --git a/eth_cache/store/README.lmdb.md b/eth_cache/store/README.lmdb.md @@ -0,0 +1,37 @@ +# Storage paths + + +## Content prefixes + +| file cache path | lmdb cache key | content | +|---|---|---| +| `block/src/<block_hash_hex_leveldir>` | `block/src/<block_hash_bytes>` | block json source | +| `block/num/<block_number_int_leveldir>` | `block/num/<block_number_int_bytes_be>` | block hash (32 bytes) | +| `block/hash/<block_hash_hex_leveldir>` | `block/hash/<block_hash_bytes>` | block number (8 bytes) | +| `tx/src/<tx_hash>` | `tx/src/<tx_hash_bytes>` | tx json source | +| `tx/raw/<tx_hash>` | `tx/raw/<tx_hash_bytes>` | tx rlp (bytes) | +| `rcpt/src/<tx_hash>` | `rcpt/src/<tx_hash_bytes>` | tx receipt json source | +| `address/<address_hex_leveldir>/<tx_hash_hex>` | `address/<address_bytes>/<tx_hash>` | none | + +The address index has no content, and it has one key/file per transaction hash associated with the address. + +## Leveldir + +## hex + +Two first bytes became two nested directory named after the byte value. + + +| value | path | +|---|---| +| `2B10B3DF...BCEF9D9B` | `2B/10/2B10B3DF...BCEF9D9B` | + + +## number + +Two nested directories segment numbers in 100000 and 100 strides respectively. + +| number | path | +|---|---| +| 12345678 | 12300000/12345000/12345678 | +| 98654 | 0/98000/98654 |