book/architecture: add resource index (#268)

* resource index

* index

* cap

* cleanup

books/architecture/src/SUMMARY.md

@@ -93,17 +93,20 @@
 
 ---
 
-- [⚪️ Resource model](resource-model/intro.md)
-    - [⚪️ File system](resource-model/file-system.md)
-    - [⚪️ Sockets](resource-model/sockets.md)
-    - [⚪️ Memory](resource-model/memory.md)
-    - [🟡 Concurrency and parallelism](resource-model/concurrency-and-parallelism/intro.md)
-        - [⚪️ Map](resource-model/concurrency-and-parallelism/map.md)
-        - [⚪️ The RPC server](resource-model/concurrency-and-parallelism/the-rpc-server.md)
-        - [⚪️ The database](resource-model/concurrency-and-parallelism/the-database.md)
-        - [⚪️ The block downloader](resource-model/concurrency-and-parallelism/the-block-downloader.md)
-        - [⚪️ The verifier](resource-model/concurrency-and-parallelism/the-verifier.md)
-        - [⚪️ Thread exit](resource-model/concurrency-and-parallelism/thread-exit.md)
+- [⚪️ Resources](resources/intro.md)
+    - [⚪️ File system](resources/fs/intro.md)
+        - [🟡 Index of PATHs](resources/fs/paths.md)
+    - [⚪️ Sockets](resources/sockets/index.md)
+        - [🔴 Index of ports](resources/sockets/ports.md)
+    - [⚪️ Memory](resources/memory.md)
+    - [🟡 Concurrency and parallelism](resources/cap/intro.md)
+        - [⚪️ Map](resources/cap/map.md)
+        - [⚪️ The RPC server](resources/cap/the-rpc-server.md)
+        - [⚪️ The database](resources/cap/the-database.md)
+        - [⚪️ The block downloader](resources/cap/the-block-downloader.md)
+        - [⚪️ The verifier](resources/cap/the-verifier.md)
+        - [⚪️ Thread exit](resources/cap/thread-exit.md)
+        - [🔴 Index of threads](resources/cap/threads.md)
 
 ---
 

books/architecture/src/resource-model/intro.md

@@ -1 +0,0 @@
-# ⚪️ Resource model

books/architecture/src/resource-model/sockets.md

@@ -1 +0,0 @@
-# ⚪️ Sockets

books/architecture/src/resources/cap/threads.md

@@ -0,0 +1,2 @@
+# Index of threads
+This is an index of all of the system threads Cuprate actively uses.

books/architecture/src/resources/fs/paths.md

@@ -0,0 +1,87 @@
+# Index of PATHs
+This is an index of all of the filesystem PATHs Cuprate actively uses.
+
+The [`cuprate_helper::fs`](https://doc.cuprate.org/cuprate_helper/fs/index.html)
+module defines the general locations used throughout Cuprate.
+
+[`dirs`](https://docs.rs/dirs) is used internally, which follows
+the PATH standards/conventions on each OS Cuprate supports, i.e.:
+- the [XDG base directory](https://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html) and the [XDG user directory](https://www.freedesktop.org/wiki/Software/xdg-user-dirs/) specifications on Linux
+- the [Known Folder](https://msdn.microsoft.com/en-us/library/windows/desktop/bb776911(v=vs.85).aspx) system on Windows
+- the [Standard Directories](https://developer.apple.com/library/content/documentation/FileManagement/Conceptual/FileSystemProgrammingGuide/FileSystemOverview/FileSystemOverview.html#//apple_ref/doc/uid/TP40010672-CH2-SW6) on macOS
+
+## Cache
+Cuprate's cache directory.
+
+| OS      | PATH                                    |
+|---------|-----------------------------------------|
+| Windows | `C:\Users\Alice\AppData\Local\Cuprate\` |
+| macOS   | `/Users/Alice/Library/Caches/Cuprate/`  |
+| Linux   | `/home/alice/.cache/cuprate/`           |
+
+## Config
+Cuprate's config directory.
+
+| OS      | PATH                                                |
+|---------|-----------------------------------------------------|
+| Windows | `C:\Users\Alice\AppData\Roaming\Cuprate\`           |
+| macOS   | `/Users/Alice/Library/Application Support/Cuprate/` |
+| Linux   | `/home/alice/.config/cuprate/`                      |
+
+## Data
+Cuprate's data directory.
+
+| OS      | PATH                                                |
+|---------|-----------------------------------------------------|
+| Windows | `C:\Users\Alice\AppData\Roaming\Cuprate\`           |
+| macOS   | `/Users/Alice/Library/Application Support/Cuprate/` |
+| Linux   | `/home/alice/.local/share/cuprate/`                 |
+
+## Blockchain
+Cuprate's blockchain directory.
+
+| OS      | PATH                                                           |
+|---------|----------------------------------------------------------------|
+| Windows | `C:\Users\Alice\AppData\Roaming\Cuprate\blockchain\`           |
+| macOS   | `/Users/Alice/Library/Application Support/Cuprate/blockchain/` |
+| Linux   | `/home/alice/.local/share/cuprate/blockchain/`                 |
+
+## Transaction pool
+Cuprate's transaction pool directory.
+
+| OS      | PATH                                                       |
+|---------|------------------------------------------------------------|
+| Windows | `C:\Users\Alice\AppData\Roaming\Cuprate\txpool\`           |
+| macOS   | `/Users/Alice/Library/Application Support/Cuprate/txpool/` |
+| Linux   | `/home/alice/.local/share/cuprate/txpool/`                 |
+
+## Database
+Cuprate's database location/filenames depend on:
+
+- Which database it is
+- Which backend is being used
+
+---
+
+`cuprate_blockchain` files are in the above mentioned `blockchain` folder.
+
+`cuprate_txpool` files are in the above mentioned `txpool` folder.
+
+---
+
+If the `heed` backend is being used, these files will be created:
+
+| Filename   | Purpose            |
+|------------|--------------------|
+| `data.mdb` | Main data file     |
+| `lock.mdb` | Database lock file |
+
+For example: `/home/alice/.local/share/cuprate/blockchain/lock.mdb`.
+
+If the `redb` backend is being used, these files will be created:
+
+| Filename    | Purpose            |
+|-------------|--------------------|
+| `data.redb` | Main data file     |
+
+For example: `/home/alice/.local/share/cuprate/txpool/data.redb`.

books/architecture/src/resources/intro.md

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+# Resources

books/architecture/src/resources/sockets/index.md

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+# Sockets

books/architecture/src/resources/sockets/ports.md

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+# Index of ports
+This is an index of all of the network sockets Cuprate actively uses.