change storage engine to sled from sqlite

backend/Cargo.toml

@@ -45,7 +45,7 @@ anyhow = "1.0.71"
 serde_json = "1.0.94"
 axum-macros = "0.3.8"
 axum = { version = "0.6.20", features = ["headers", "ws"] }
-cozo = { version = "0.7.6", default-features = false, features = ["minimal", "rayon"] }
+cozo = { version = "0.7.6", default-features = false, features = ["minimal", "rayon", "storage-sled"] }
 itertools = "0.11.0"
 miette = "5.10.0"
 map-macro = "0.2.6"

backend/conf/prod.yaml

@@ -6,4 +6,4 @@
 host: 0.0.0.0
 
 db:
-  storage_engine: SQLite
+  storage_engine: Sled

backend/src/conf.rs

@@ -43,6 +43,7 @@ pub struct EnvConf {
 pub enum DbStorageEngine {
     Memory,
     SQLite,
+    Sled,
 }
 
 #[derive(Deserialize, Clone, Debug)]
@@ -57,6 +58,7 @@ impl DbConf {
             match self.storage_engine {
                 DbStorageEngine::Memory => "mem",
                 DbStorageEngine::SQLite => "sqlite",
+                DbStorageEngine::Sled => "sled",
             },
             &self.path,
             Default::default(),

docs/install/backend-run.txt

@@ -1,21 +1,10 @@
 # local
 cargo run
 
-
 # prod test
-BE__ENV=prod BE__DB__STORAGE_ENGINE=Memory BE__DB__PATH="" cargo run --release
-
-# prod (detach process and redirect logs)
-BE__ENV=prod \
-BE__DB__STORAGE_ENGINE=Memory \
-BE__DB__PATH="/root/db" \
-nohup cargo run --release > /root/log.txt 2>&1 &
-
-
-# prod test with persistent storage (inconsistent/broken)
 BE__ENV=prod BE__DB__PATH="/root/db" cargo run --release
 
-# prod with persistent storage (detach process and redirect logs) (inconsistent/broken)
+# prod with (detach process and redirect logs)
 BE__ENV=prod \
 BE__DB__PATH="/root/db" \
 nohup cargo run --release > /root/log.txt 2>&1 &

docs/remember.txt

@@ -9,9 +9,4 @@
 TODO
 - figure out session "Put session" multiple times per request in logs
 
-- prevent 500 responses due to "database is locked" when SQLite is used
-    - revert to persistent storage usage for prod
-// or/and
-- don't just give up - retry 500 from frontend side
-
 - protect endpoint_hits