fix some comments

Signed-off-by: battmdpkq <[email protected]>
Replicated-from: #123
Includes-commit: 943bedb

.bleep

@@ -1 +1 @@
-c3ec53f03ed27ce7ce90ec76e9ae67bab2097fd3
+deb3c5409e938ec9c7d0da9b7a2d331eabbb2cd5

pingora-cache/src/memory.rs

@@ -211,7 +211,7 @@ impl HandleHit for MemHitHandler {
 pub struct MemMissHandler {
     body: Arc<RwLock<Vec<u8>>>,
     bytes_written: Arc<watch::Sender<PartialState>>,
-    // these are used only in finish() to to data from temp to cache
+    // these are used only in finish() to data from temp to cache
     key: String,
     cache: Arc<RwLock<HashMap<String, CacheObject>>>,
     temp: Arc<RwLock<HashMap<String, TempObject>>>,

pingora-load-balancing/src/health_check.rs

@@ -34,7 +34,7 @@ pub trait HealthCheck {
     /// This function defines how many *consecutive* checks should flip the health of a backend.
     ///
     /// For example: with `success``: `true`: this function should return the
-    /// number of check need to to flip from unhealthy to healthy.
+    /// number of check need to flip from unhealthy to healthy.
     fn health_threshold(&self, success: bool) -> usize;
 }
 

pingora-proxy/src/proxy_cache.rs

@@ -85,7 +85,7 @@ impl<SV> HttpProxy<SV> {
                     if let Some((mut meta, handler)) = res {
                         // vary logic
                         // because this branch can be called multiple times in a loop, and we only
-                        // need to to update the vary once, check if variance is already set to
+                        // need to update the vary once, check if variance is already set to
                         // prevent unnecessary vary lookups
                         let cache_key = session.cache.cache_key();
                         if let Some(variance) = cache_key.variance_bin() {

pingora-proxy/src/proxy_trait.rs

@@ -18,7 +18,7 @@ use pingora_cache::{key::HashBinary, CacheKey, CacheMeta, RespCacheable, RespCac
 /// The interface to control the HTTP proxy
 ///
 /// The methods in [ProxyHttp] are filters/callbacks which will be performed on all requests at their
-/// paticular stage (if applicable).
+/// particular stage (if applicable).
 ///
 /// If any of the filters returns [Result::Err], the request will fail and the error will be logged.
 #[cfg_attr(not(doc_async_trait), async_trait)]
@@ -264,7 +264,7 @@ pub trait ProxyHttp {
     ///
     /// If the error can be retried, [Self::upstream_peer()] will be called again so that the user
     /// can decide whether to send the request to the same upstream or another upstream that is possibly
-    /// avaliable.
+    /// available.
     fn fail_to_connect(
         &self,
         _session: &mut Session,