Update comparison-restic.md

Author: simonsan

src/comparison-restic.md

@@ -3,21 +3,23 @@
 Note that we regularly update this document to compare the latest versions of
 rustic and restic. Currently, we compare restic 0.17.1 with rustic 0.9.1.
 
+You can also read a [simple comparison of borg, restic and rustic blogpost](https://archive.ph/So9vG).
+
 ## General differences
 
-|                        | `restic`                                          | `rustic`                                           |
-| ---------------------- | ------------------------------------------------- | -------------------------------------------------- |
-| programming language   | Go                                                | Rust                                               |
-| test coverage          | ✅                                                | ❌ (46% in rustic_core)                            |
-| config profile support | ❌ (wrapper tools available)                      | ✅                                                 |
-| locking                | lock files in repository                          | lock-free operations, two-phase pruning            |
-| cold storage           | ❌ (no direct support, may work in special cases) | ✅ (full support including warm-up of needed data) |
-| in-repo config         | ❌                                                | ✅ (see below for details)                         |
-| logging                | `-v` or `--quiet`                                 | `--log-level`                                      |
-| allow to log to file   | ❌                                                | ✅                                                 |
-| returns error code     | ✅                                                | (✅) only 0 or 1; not all commands support it      |
-| available as library   | ❌                                                | ✅ rustic_core                                     |
-| interactive mode (TUI) | ❌                                                | ✅                                                 |
+|                        | `restic`                                          | `rustic`                                                |
+| ---------------------- | ------------------------------------------------- | ------------------------------------------------------- |
+| programming language   | Go                                                | Rust                                                    |
+| test coverage          | ✅                                                | ❌ (42% in rustic_core)                                |
+| config profile support | ❌ (wrapper tools available)                      | ✅                                                     |
+| locking                | lock files in repository                          | lock-free operations, two-phase pruning                 |
+| cold storage           | ❌ (no direct support, may work in special cases) | ✅ (full support including warm-up of needed data)     |
+| in-repo config         | ❌                                                | ✅ (see below for details)                             |
+| logging                | `-v` or `--quiet`                                 | `--log-level`                                           |
+| allow to log to file   | ❌                                                | ✅                                                     |
+| returns error code     | ✅                                                | (✅) only 0 or 1; not all commands support it          |
+| available as library   | ❌                                                | ✅ [rustic_core](https://crates.io/crates/rustic_core) |
+| interactive mode (TUI) | ❌                                                | ✅                                                     |
 
 ## Storage backends