solana/docs/art/validator-proposal.bob

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.------------.
| Upstream |
| Validators |
`----+-------`
|
|
.-----------------------------------.
| Validator | |
| v |
| .-----------. .------------. |
.--------. | | Fetch | | Repair | |
| Client +---->| Stage | | Stage | |
`--------` | `---+-------` `----+-------` |
| | | |
| v v |
| .-----------. .------------. |
| | TPU |<-->| Blockstore | |
| | | | | |
| `-----------` `----+-------` |
| | |
| v |
| .------------. |
| | Multicast | |
| | Stage | |
| `----+-------` |
| | |
`-----------------------------------`
|
v
.------------.
| Downstream |
| Validators |
`------------`
.------------.
| PoH |
| Service |
`-------+----`
^ |
| |
.-----------------------------------.
| TPU | | |
| | v |
.-------. | .-----------. .---+--------. | .------------.
| Fetch +---->| SigVerify +--->| Banking |<--->| Blockstore |
| Stage | | | Stage | | Stage | | | |
`-------` | `-----------` `-----+------` | `------------`
| | |
| | |
`-----------------------------------`
|
v
.------------.
| Banktree |
| |
`------------`