diff --git a/src/web/proxyhttp.rs b/src/web/proxyhttp.rs
index 44eda25..5703de4 100644
--- a/src/web/proxyhttp.rs
+++ b/src/web/proxyhttp.rs
@@ -7,6 +7,7 @@ use pingora_http::{RequestHeader, ResponseHeader};
 use pingora_proxy::{ProxyHttp, Session};
 use std::any::type_name;
 use std::sync::atomic::{AtomicUsize, Ordering};
+use std::sync::Arc;
 
 #[allow(dead_code)]
 pub fn typeoff<T>(_: T) -> &'static str {
@@ -23,13 +24,14 @@ pub struct LB {
     // pub upstreams_map: Arc<Mutex<HashMap<String, Vec<(String, u16)>>>>,
     // upstreams: DashMap<String, (Vec<(&'static str, u16)>, AtomicUsize)>,
     // pub upstreams_map: DashMap<String, Vec<(String, u16)>>,
-    pub upstreams_map: DashMap<String, (Vec<(String, u16)>, AtomicUsize)>,
     // pub upstreams_maps: DashMap<String, Arc<LoadBalancer<RoundRobin>>>,
+    pub upstreams_map: DashMap<String, (Vec<(String, u16)>, AtomicUsize)>,
 }
 
 pub trait GetHost {
     fn get_host(&self, peer: &str) -> Option<(String, u16)>;
     fn set_host(&mut self, peer: &str, host: &str, port: u16);
+    fn discover_hosts(&mut self);
 }
 
 impl GetHost for LB {
@@ -83,6 +85,15 @@ impl GetHost for LB {
         // let elapsed = now.elapsed();
         // println!("Elapsed: {:.2?}", elapsed);
     }
+
+    fn discover_hosts(&mut self) {
+        self.set_host("myip.netangels.net", "192.168.1.1", 8000);
+        self.set_host("myip.netangels.net", "127.0.0.1", 8000);
+        self.set_host("myip.netangels.net", "127.0.0.2", 8000);
+        self.set_host("polo.netangels.net", "192.168.1.1", 8000);
+        self.set_host("polo.netangels.net", "192.168.1.10", 8000);
+        self.set_host("glop.netangels.net", "192.168.1.20", 8000);
+    }
 }
 
 #[async_trait]
@@ -173,56 +184,3 @@ impl ProxyHttp for LB {
     //     info!("{}, response code: {response_code}", self.request_summary(session, ctx));
     // }
 }
-
-/*
-pub struct SD;
-
-#[async_trait]
-impl ServiceDiscovery for SD {
-    async fn discover(&self) -> Result<(BTreeSet<Backend>, HashMap<u64, bool>)> {
-        let addrs = read_upstreams_from_file()?;
-
-        /*
-        let addr2 = read_upstreams_from_file_d()?;
-        let mut hmn = HashMap::new();
-        for (k, v) in addr2 {
-            let vl = v
-                .into_iter()
-                .map(|addr| Backend {
-                    addr,
-                    weight: 1,
-                    ext: Default::default(),
-                })
-                .collect::<BTreeSet<_>>();
-            hmn.insert(k, vl);
-        }
-        println!("{:?}", hmn);
-        println!("================== {:?}", addrs);
-        */
-
-        let backends = addrs
-            .into_iter()
-            .map(|addr| Backend {
-                addr,
-                weight: 1,
-                ext: Default::default(),
-            })
-            .collect::<BTreeSet<_>>();
-        Ok((backends, HashMap::new()))
-    }
-}
-
-fn read_upstreams_from_file() -> Result<Vec<SocketAddr>> {
-    let contents = std::fs::read_to_string("upstreams.txt").map_err(|e| Error::because(ErrorType::InternalError, "reading upstreams file", e))?;
-    let addrs = contents
-        .lines()
-        .filter(|line| !line.trim().is_empty())
-        .map(|line| {
-            line.trim()
-                .parse::<SocketAddr>()
-                .map_err(|e| Error::because(ErrorType::InternalError, "parsing upstream address", e))
-        })
-        .collect::<Result<Vec<_>>>()?;
-    Ok(addrs)
-}
-*/
diff --git a/src/web/start.rs b/src/web/start.rs
index 26944eb..1ea55b8 100644
--- a/src/web/start.rs
+++ b/src/web/start.rs
@@ -1,5 +1,6 @@
 use crate::web::proxyhttp::{GetHost, LB};
 use dashmap::DashMap;
+use pingora_core::prelude::background_service;
 use pingora_core::server::Server;
 use std::sync::atomic::AtomicUsize;
 /*
@@ -45,22 +46,15 @@ pub fn run() {
         upstreams_map,
         // upstreams_maps: DashMap::new(),
     };
-    add_hosts(&mut ll);
+
+    let background = background_service("load balancer", ll.discover_hosts());
+    background.task();
 
     let mut lb = pingora_proxy::http_proxy_service(&server.configuration, ll);
 
     lb.add_tcp("0.0.0.0:6193");
-    server.add_service(lb);
-    // server.add_service(background);
+    // server.add_service(lb);
+    // server.add_service(background.task());
 
     server.run_forever();
 }
-
-fn add_hosts(lb: &mut LB) {
-    lb.set_host("myip.netangels.net", "192.168.1.1", 8000);
-    lb.set_host("myip.netangels.net", "127.0.0.1", 8000);
-    lb.set_host("myip.netangels.net", "127.0.0.2", 8000);
-    lb.set_host("polo.netangels.net", "192.168.1.1", 8000);
-    lb.set_host("polo.netangels.net", "192.168.1.10", 8000);
-    lb.set_host("glop.netangels.net", "192.168.1.20", 8000);
-}