diff --git a/src/app.rs b/src/app.rs
index edc8403..4e23395 100644
--- a/src/app.rs
+++ b/src/app.rs
@@ -19,16 +19,16 @@ use std::sync::Arc;
 
 use openraft::Config;
 
-use crate::ExampleNodeId;
-use crate::ExampleRaft;
-use crate::ExampleStore;
+use crate::DcacheNodeId;
+use crate::DcacheRaft;
+use crate::DcacheStore;
 
 // Representation of an application state. This struct can be shared around to share
 // instances of raft, store and more.
-pub struct ExampleApp {
-    pub id: ExampleNodeId,
+pub struct DcacheApp {
+    pub id: DcacheNodeId,
     pub addr: String,
-    pub raft: ExampleRaft,
-    pub store: Arc<ExampleStore>,
+    pub raft: DcacheRaft,
+    pub store: Arc<DcacheStore>,
     pub config: Arc<Config>,
 }
diff --git a/src/bin/main.rs b/src/bin/main.rs
index 78d9374..3c9e2a0 100644
--- a/src/bin/main.rs
+++ b/src/bin/main.rs
@@ -16,14 +16,14 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 use clap::Parser;
-use dcache::network::raft_network_impl::ExampleNetwork;
+use dcache::network::raft_network_impl::DcacheNetwork;
 use dcache::start_example_raft_node;
-use dcache::store::ExampleStore;
-use dcache::ExampleTypeConfig;
+use dcache::store::DcacheStore;
+use dcache::DcacheTypeConfig;
 use openraft::Raft;
 use tracing_subscriber::EnvFilter;
 
-pub type ExampleRaft = Raft<ExampleTypeConfig, ExampleNetwork, ExampleStore>;
+pub type DcacheRaft = Raft<DcacheTypeConfig, DcacheNetwork, DcacheStore>;
 
 #[derive(Parser, Clone, Debug)]
 #[clap(author, version, about, long_about = None)]
diff --git a/src/client.rs b/src/client.rs
index b3c3749..a28d130 100644
--- a/src/client.rs
+++ b/src/client.rs
@@ -34,24 +34,24 @@ use serde::Serialize;
 use tokio::time::timeout;
 
 use crate::typ;
-use crate::ExampleNodeId;
-use crate::ExampleRequest;
+use crate::DcacheNodeId;
+use crate::DcacheRequest;
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct Empty {}
 
-pub struct ExampleClient {
+pub struct DcacheClient {
     /// The leader node to send request to.
     ///
     /// All traffic should be sent to the leader in a cluster.
-    pub leader: Arc<Mutex<(ExampleNodeId, String)>>,
+    pub leader: Arc<Mutex<(DcacheNodeId, String)>>,
 
     pub inner: Client,
 }
 
-impl ExampleClient {
+impl DcacheClient {
     /// Create a client with a leader node id and a node manager to get node address by node id.
-    pub fn new(leader_id: ExampleNodeId, leader_addr: String) -> Self {
+    pub fn new(leader_id: DcacheNodeId, leader_addr: String) -> Self {
         Self {
             leader: Arc::new(Mutex::new((leader_id, leader_addr))),
             inner: reqwest::Client::new(),
@@ -68,7 +68,7 @@ impl ExampleClient {
     /// The result of applying the request will be returned.
     pub async fn write(
         &self,
-        req: &ExampleRequest,
+        req: &DcacheRequest,
     ) -> Result<typ::ClientWriteResponse, typ::RPCError<typ::ClientWriteError>> {
         self.send_rpc_to_leader("write", Some(req)).await
     }
@@ -105,10 +105,10 @@ impl ExampleClient {
 
     /// Add a node as learner.
     ///
-    /// The node to add has to exist, i.e., being added with `write(ExampleRequest::AddNode{})`
+    /// The node to add has to exist, i.e., being added with `write(DcacheRequest::AddNode{})`
     pub async fn add_learner(
         &self,
-        req: (ExampleNodeId, String),
+        req: (DcacheNodeId, String),
     ) -> Result<typ::ClientWriteResponse, typ::RPCError<typ::ClientWriteError>> {
         self.send_rpc_to_leader("add-learner", Some(&req)).await
     }
@@ -119,7 +119,7 @@ impl ExampleClient {
     /// or an error [`LearnerNotFound`] will be returned.
     pub async fn change_membership(
         &self,
-        req: &BTreeSet<ExampleNodeId>,
+        req: &BTreeSet<DcacheNodeId>,
     ) -> Result<typ::ClientWriteResponse, typ::RPCError<typ::ClientWriteError>> {
         self.send_rpc_to_leader("change-membership", Some(req))
             .await
@@ -130,7 +130,7 @@ impl ExampleClient {
     /// Metrics contains various information about the cluster, such as current leader,
     /// membership config, replication status etc.
     /// See [`RaftMetrics`].
-    pub async fn metrics(&self) -> Result<RaftMetrics<ExampleNodeId, BasicNode>, typ::RPCError> {
+    pub async fn metrics(&self) -> Result<RaftMetrics<DcacheNodeId, BasicNode>, typ::RPCError> {
         self.do_send_rpc_to_leader("metrics", None::<&()>).await
     }
 
diff --git a/src/lib.rs b/src/lib.rs
index af5e25e..46e1c3a 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -28,50 +28,50 @@ use openraft::BasicNode;
 use openraft::Config;
 use openraft::Raft;
 
-use crate::app::ExampleApp;
+use crate::app::DcacheApp;
 use crate::network::api;
 use crate::network::management;
 use crate::network::raft;
-use crate::network::raft_network_impl::ExampleNetwork;
-use crate::store::ExampleRequest;
-use crate::store::ExampleResponse;
-use crate::store::ExampleStore;
+use crate::network::raft_network_impl::DcacheNetwork;
+use crate::store::DcacheRequest;
+use crate::store::DcacheResponse;
+use crate::store::DcacheStore;
 
 pub mod app;
 pub mod client;
 pub mod network;
 pub mod store;
 
-pub type ExampleNodeId = u64;
+pub type DcacheNodeId = u64;
 
 openraft::declare_raft_types!(
     /// Declare the type configuration for example K/V store.
-    pub ExampleTypeConfig: D = ExampleRequest, R = ExampleResponse, NodeId = ExampleNodeId, Node = BasicNode
+    pub DcacheTypeConfig: D = DcacheRequest, R = DcacheResponse, NodeId = DcacheNodeId, Node = BasicNode
 );
 
-pub type ExampleRaft = Raft<ExampleTypeConfig, ExampleNetwork, Arc<ExampleStore>>;
+pub type DcacheRaft = Raft<DcacheTypeConfig, DcacheNetwork, Arc<DcacheStore>>;
 
 pub mod typ {
     use openraft::BasicNode;
 
-    use crate::ExampleNodeId;
-    use crate::ExampleTypeConfig;
+    use crate::DcacheNodeId;
+    use crate::DcacheTypeConfig;
 
     pub type RaftError<E = openraft::error::Infallible> =
-        openraft::error::RaftError<ExampleNodeId, E>;
+        openraft::error::RaftError<DcacheNodeId, E>;
     pub type RPCError<E = openraft::error::Infallible> =
-        openraft::error::RPCError<ExampleNodeId, BasicNode, RaftError<E>>;
+        openraft::error::RPCError<DcacheNodeId, BasicNode, RaftError<E>>;
 
-    pub type ClientWriteError = openraft::error::ClientWriteError<ExampleNodeId, BasicNode>;
-    pub type CheckIsLeaderError = openraft::error::CheckIsLeaderError<ExampleNodeId, BasicNode>;
-    pub type ForwardToLeader = openraft::error::ForwardToLeader<ExampleNodeId, BasicNode>;
-    pub type InitializeError = openraft::error::InitializeError<ExampleNodeId, BasicNode>;
+    pub type ClientWriteError = openraft::error::ClientWriteError<DcacheNodeId, BasicNode>;
+    pub type CheckIsLeaderError = openraft::error::CheckIsLeaderError<DcacheNodeId, BasicNode>;
+    pub type ForwardToLeader = openraft::error::ForwardToLeader<DcacheNodeId, BasicNode>;
+    pub type InitializeError = openraft::error::InitializeError<DcacheNodeId, BasicNode>;
 
-    pub type ClientWriteResponse = openraft::raft::ClientWriteResponse<ExampleTypeConfig>;
+    pub type ClientWriteResponse = openraft::raft::ClientWriteResponse<DcacheTypeConfig>;
 }
 
 pub async fn start_example_raft_node(
-    node_id: ExampleNodeId,
+    node_id: DcacheNodeId,
     http_addr: String,
 ) -> std::io::Result<()> {
     // Create a configuration for the raft instance.
@@ -89,11 +89,11 @@ pub async fn start_example_raft_node(
     let config = Arc::new(config.validate().unwrap());
 
     // Create a instance of where the Raft data will be stored.
-    let store = Arc::new(ExampleStore::new(salt));
+    let store = Arc::new(DcacheStore::new(salt));
 
     // Create the network layer that will connect and communicate the raft instances and
     // will be used in conjunction with the store created above.
-    let network = ExampleNetwork {};
+    let network = DcacheNetwork {};
 
     // Create a local raft instance.
     let raft = Raft::new(node_id, config.clone(), network, store.clone())
@@ -102,7 +102,7 @@ pub async fn start_example_raft_node(
 
     // Create an application that will store all the instances created above, this will
     // be later used on the actix-web services.
-    let app = Data::new(ExampleApp {
+    let app = Data::new(DcacheApp {
         id: node_id,
         addr: http_addr.clone(),
         raft,
diff --git a/src/network/api.rs b/src/network/api.rs
index ce7cdf2..b2e9797 100644
--- a/src/network/api.rs
+++ b/src/network/api.rs
@@ -25,9 +25,9 @@ use openraft::error::RaftError;
 use openraft::BasicNode;
 use web::Json;
 
-use crate::app::ExampleApp;
-use crate::store::ExampleRequest;
-use crate::ExampleNodeId;
+use crate::app::DcacheApp;
+use crate::store::DcacheRequest;
+use crate::DcacheNodeId;
 
 /**
  * Application API
@@ -40,8 +40,8 @@ use crate::ExampleNodeId;
  */
 #[post("/write")]
 pub async fn write(
-    app: Data<ExampleApp>,
-    req: Json<ExampleRequest>,
+    app: Data<DcacheApp>,
+    req: Json<DcacheRequest>,
 ) -> actix_web::Result<impl Responder> {
     let response = app.raft.client_write(req.0).await;
     Ok(Json(response))
@@ -51,7 +51,7 @@ pub async fn write(
 //    RenameCaptcha(RenameCaptcha),
 //    RemoveCaptcha(RemoveCaptcha),
 //#[post("/post")]
-//pub async fn read(app: Data<ExampleApp>, req: Json<String>) -> actix_web::Result<impl Responder> {
+//pub async fn read(app: Data<DcacheApp>, req: Json<String>) -> actix_web::Result<impl Responder> {
 //    let state_machine = app.store.state_machine.read().await;
 //    let key = req.0;
 //    let value = state_machine.data.get(&key).cloned();
@@ -61,7 +61,7 @@ pub async fn write(
 //}
 //
 //#[post("/visitor/add")]
-//pub async fn add_visitor(app: Data<ExampleApp>, req: Json<String>) -> actix_web::Result<impl Responder> {
+//pub async fn add_visitor(app: Data<DcacheApp>, req: Json<String>) -> actix_web::Result<impl Responder> {
 //    let state_machine = app.store.state_machine.read().await;
 //    let key = req.0;
 //    let value = state_machine.data.get(&key).cloned();
diff --git a/src/network/management.rs b/src/network/management.rs
index 1af82df..cd77ac8 100644
--- a/src/network/management.rs
+++ b/src/network/management.rs
@@ -28,8 +28,8 @@ use openraft::BasicNode;
 use openraft::RaftMetrics;
 use web::Json;
 
-use crate::app::ExampleApp;
-use crate::ExampleNodeId;
+use crate::app::DcacheApp;
+use crate::DcacheNodeId;
 
 // --- Cluster management
 
@@ -40,8 +40,8 @@ use crate::ExampleNodeId;
 /// (by calling `change-membership`)
 #[post("/add-learner")]
 pub async fn add_learner(
-    app: Data<ExampleApp>,
-    req: Json<(ExampleNodeId, String)>,
+    app: Data<DcacheApp>,
+    req: Json<(DcacheNodeId, String)>,
 ) -> actix_web::Result<impl Responder> {
     let node_id = req.0 .0;
     let node = BasicNode {
@@ -54,8 +54,8 @@ pub async fn add_learner(
 /// Changes specified learners to members, or remove members.
 #[post("/change-membership")]
 pub async fn change_membership(
-    app: Data<ExampleApp>,
-    req: Json<BTreeSet<ExampleNodeId>>,
+    app: Data<DcacheApp>,
+    req: Json<BTreeSet<DcacheNodeId>>,
 ) -> actix_web::Result<impl Responder> {
     let res = app.raft.change_membership(req.0, false).await;
     Ok(Json(res))
@@ -63,7 +63,7 @@ pub async fn change_membership(
 
 /// Initialize a single-node cluster.
 #[post("/init")]
-pub async fn init(app: Data<ExampleApp>) -> actix_web::Result<impl Responder> {
+pub async fn init(app: Data<DcacheApp>) -> actix_web::Result<impl Responder> {
     let mut nodes = BTreeMap::new();
     nodes.insert(
         app.id,
@@ -77,9 +77,9 @@ pub async fn init(app: Data<ExampleApp>) -> actix_web::Result<impl Responder> {
 
 /// Get the latest metrics of the cluster
 #[get("/metrics")]
-pub async fn metrics(app: Data<ExampleApp>) -> actix_web::Result<impl Responder> {
+pub async fn metrics(app: Data<DcacheApp>) -> actix_web::Result<impl Responder> {
     let metrics = app.raft.metrics().borrow().clone();
 
-    let res: Result<RaftMetrics<ExampleNodeId, BasicNode>, Infallible> = Ok(metrics);
+    let res: Result<RaftMetrics<DcacheNodeId, BasicNode>, Infallible> = Ok(metrics);
     Ok(Json(res))
 }
diff --git a/src/network/raft.rs b/src/network/raft.rs
index aa2a384..2ac62d6 100644
--- a/src/network/raft.rs
+++ b/src/network/raft.rs
@@ -24,16 +24,16 @@ use openraft::raft::InstallSnapshotRequest;
 use openraft::raft::VoteRequest;
 use web::Json;
 
-use crate::app::ExampleApp;
-use crate::ExampleNodeId;
-use crate::ExampleTypeConfig;
+use crate::app::DcacheApp;
+use crate::DcacheNodeId;
+use crate::DcacheTypeConfig;
 
 // --- Raft communication
 
 #[post("/raft-vote")]
 pub async fn vote(
-    app: Data<ExampleApp>,
-    req: Json<VoteRequest<ExampleNodeId>>,
+    app: Data<DcacheApp>,
+    req: Json<VoteRequest<DcacheNodeId>>,
 ) -> actix_web::Result<impl Responder> {
     let res = app.raft.vote(req.0).await;
     Ok(Json(res))
@@ -41,8 +41,8 @@ pub async fn vote(
 
 #[post("/raft-append")]
 pub async fn append(
-    app: Data<ExampleApp>,
-    req: Json<AppendEntriesRequest<ExampleTypeConfig>>,
+    app: Data<DcacheApp>,
+    req: Json<AppendEntriesRequest<DcacheTypeConfig>>,
 ) -> actix_web::Result<impl Responder> {
     let res = app.raft.append_entries(req.0).await;
     Ok(Json(res))
@@ -50,8 +50,8 @@ pub async fn append(
 
 #[post("/raft-snapshot")]
 pub async fn snapshot(
-    app: Data<ExampleApp>,
-    req: Json<InstallSnapshotRequest<ExampleTypeConfig>>,
+    app: Data<DcacheApp>,
+    req: Json<InstallSnapshotRequest<DcacheTypeConfig>>,
 ) -> actix_web::Result<impl Responder> {
     let res = app.raft.install_snapshot(req.0).await;
     Ok(Json(res))
diff --git a/src/network/raft_network_impl.rs b/src/network/raft_network_impl.rs
index 4a5a9bf..3482f6f 100644
--- a/src/network/raft_network_impl.rs
+++ b/src/network/raft_network_impl.rs
@@ -33,19 +33,19 @@ use openraft::RaftNetworkFactory;
 use serde::de::DeserializeOwned;
 use serde::Serialize;
 
-use crate::ExampleNodeId;
-use crate::ExampleTypeConfig;
+use crate::DcacheNodeId;
+use crate::DcacheTypeConfig;
 
-pub struct ExampleNetwork {}
+pub struct DcacheNetwork {}
 
-impl ExampleNetwork {
+impl DcacheNetwork {
     pub async fn send_rpc<Req, Resp, Err>(
         &self,
-        target: ExampleNodeId,
+        target: DcacheNodeId,
         target_node: &BasicNode,
         uri: &str,
         req: Req,
-    ) -> Result<Resp, RPCError<ExampleNodeId, BasicNode, Err>>
+    ) -> Result<Resp, RPCError<DcacheNodeId, BasicNode, Err>>
     where
         Req: Serialize,
         Err: std::error::Error + DeserializeOwned,
@@ -79,35 +79,35 @@ impl ExampleNetwork {
     }
 }
 
-// NOTE: This could be implemented also on `Arc<ExampleNetwork>`, but since it's empty, implemented
+// NOTE: This could be implemented also on `Arc<DcacheNetwork>`, but since it's empty, implemented
 // directly.
 #[async_trait]
-impl RaftNetworkFactory<ExampleTypeConfig> for ExampleNetwork {
-    type Network = ExampleNetworkConnection;
+impl RaftNetworkFactory<DcacheTypeConfig> for DcacheNetwork {
+    type Network = DcacheNetworkConnection;
 
-    async fn new_client(&mut self, target: ExampleNodeId, node: &BasicNode) -> Self::Network {
-        ExampleNetworkConnection {
-            owner: ExampleNetwork {},
+    async fn new_client(&mut self, target: DcacheNodeId, node: &BasicNode) -> Self::Network {
+        DcacheNetworkConnection {
+            owner: DcacheNetwork {},
             target,
             target_node: node.clone(),
         }
     }
 }
 
-pub struct ExampleNetworkConnection {
-    owner: ExampleNetwork,
-    target: ExampleNodeId,
+pub struct DcacheNetworkConnection {
+    owner: DcacheNetwork,
+    target: DcacheNodeId,
     target_node: BasicNode,
 }
 
 #[async_trait]
-impl RaftNetwork<ExampleTypeConfig> for ExampleNetworkConnection {
+impl RaftNetwork<DcacheTypeConfig> for DcacheNetworkConnection {
     async fn send_append_entries(
         &mut self,
-        req: AppendEntriesRequest<ExampleTypeConfig>,
+        req: AppendEntriesRequest<DcacheTypeConfig>,
     ) -> Result<
-        AppendEntriesResponse<ExampleNodeId>,
-        RPCError<ExampleNodeId, BasicNode, RaftError<ExampleNodeId>>,
+        AppendEntriesResponse<DcacheNodeId>,
+        RPCError<DcacheNodeId, BasicNode, RaftError<DcacheNodeId>>,
     > {
         self.owner
             .send_rpc(self.target, &self.target_node, "raft-append", req)
@@ -116,10 +116,10 @@ impl RaftNetwork<ExampleTypeConfig> for ExampleNetworkConnection {
 
     async fn send_install_snapshot(
         &mut self,
-        req: InstallSnapshotRequest<ExampleTypeConfig>,
+        req: InstallSnapshotRequest<DcacheTypeConfig>,
     ) -> Result<
-        InstallSnapshotResponse<ExampleNodeId>,
-        RPCError<ExampleNodeId, BasicNode, RaftError<ExampleNodeId, InstallSnapshotError>>,
+        InstallSnapshotResponse<DcacheNodeId>,
+        RPCError<DcacheNodeId, BasicNode, RaftError<DcacheNodeId, InstallSnapshotError>>,
     > {
         self.owner
             .send_rpc(self.target, &self.target_node, "raft-snapshot", req)
@@ -128,10 +128,10 @@ impl RaftNetwork<ExampleTypeConfig> for ExampleNetworkConnection {
 
     async fn send_vote(
         &mut self,
-        req: VoteRequest<ExampleNodeId>,
+        req: VoteRequest<DcacheNodeId>,
     ) -> Result<
-        VoteResponse<ExampleNodeId>,
-        RPCError<ExampleNodeId, BasicNode, RaftError<ExampleNodeId>>,
+        VoteResponse<DcacheNodeId>,
+        RPCError<DcacheNodeId, BasicNode, RaftError<DcacheNodeId>>,
     > {
         self.owner
             .send_rpc(self.target, &self.target_node, "raft-vote", req)
diff --git a/src/store/mod.rs b/src/store/mod.rs
index 2f7aa1e..de048c9 100644
--- a/src/store/mod.rs
+++ b/src/store/mod.rs
@@ -49,8 +49,8 @@ use sqlx::Statement;
 use tokio::sync::RwLock;
 use url::quirks::set_pathname;
 
-use crate::ExampleNodeId;
-use crate::ExampleTypeConfig;
+use crate::DcacheNodeId;
+use crate::DcacheTypeConfig;
 
 use actix::prelude::*;
 use libmcaptcha::master::messages::{
@@ -68,7 +68,7 @@ pub mod system;
  * You will want to add any request that can write data in all nodes here.
  */
 #[derive(Serialize, Deserialize, Debug, Clone)]
-pub enum ExampleRequest {
+pub enum DcacheRequest {
     //Set { key: String, value: String },
     AddVisitor(AddVisitor),
     AddCaptcha(AddCaptcha),
@@ -79,13 +79,13 @@ pub enum ExampleRequest {
 /**
  * Here you will defined what type of answer you expect from reading the data of a node.
  * In this example it will return a optional value from a given key in
- * the `ExampleRequest.Set`.
+ * the `DcacheRequest.Set`.
  *
  * TODO: Should we explain how to create multiple `AppDataResponse`?
  *
  */
 #[derive(Serialize, Deserialize, Debug, Clone)]
-pub enum ExampleResponse {
+pub enum DcacheResponse {
     AddVisitorResult(Option<AddVisitorResult>),
     Empty,
     //    AddCaptchaResult, All returns ()
@@ -94,8 +94,8 @@ pub enum ExampleResponse {
 }
 
 #[derive(Debug)]
-pub struct ExampleSnapshot {
-    pub meta: SnapshotMeta<ExampleNodeId, BasicNode>,
+pub struct DcacheSnapshot {
+    pub meta: SnapshotMeta<DcacheNodeId, BasicNode>,
 
     /// The data of the state machine at the time of this snapshot.
     pub data: Vec<u8>,
@@ -107,10 +107,10 @@ pub struct ExampleSnapshot {
  * a implementation to be serialized. Note that for this test we set both the key and
  * value as String, but you could set any type of value that has the serialization impl.
  */
-pub struct ExampleStateMachine {
-    pub last_applied_log: Option<LogId<ExampleNodeId>>,
+pub struct DcacheStateMachine {
+    pub last_applied_log: Option<LogId<DcacheNodeId>>,
 
-    pub last_membership: StoredMembership<ExampleNodeId, BasicNode>,
+    pub last_membership: StoredMembership<DcacheNodeId, BasicNode>,
 
     /// Application data.
     pub data: Arc<System<HashCache, EmbeddedMaster>>,
@@ -118,16 +118,16 @@ pub struct ExampleStateMachine {
 
 #[derive(Serialize, Deserialize, Clone)]
 struct PersistableStateMachine {
-    last_applied_log: Option<LogId<ExampleNodeId>>,
+    last_applied_log: Option<LogId<DcacheNodeId>>,
 
-    last_membership: StoredMembership<ExampleNodeId, BasicNode>,
+    last_membership: StoredMembership<DcacheNodeId, BasicNode>,
 
     /// Application data.
     data: HashMap<String, MCaptcha>,
 }
 
 impl PersistableStateMachine {
-    async fn from_statemachine(m: &ExampleStateMachine) -> Self {
+    async fn from_statemachine(m: &DcacheStateMachine) -> Self {
         let internal_data = m
             .data
             .master
@@ -147,14 +147,14 @@ impl PersistableStateMachine {
     async fn to_statemachine(
         self,
         data: Arc<System<HashCache, EmbeddedMaster>>,
-    ) -> ExampleStateMachine {
+    ) -> DcacheStateMachine {
         data.master
             .send(SetInternalData {
                 mcaptcha: self.data,
             })
             .await
             .unwrap();
-        ExampleStateMachine {
+        DcacheStateMachine {
             last_applied_log: self.last_applied_log,
             last_membership: self.last_membership,
             data,
@@ -162,26 +162,26 @@ impl PersistableStateMachine {
     }
 }
 
-pub struct ExampleStore {
-    last_purged_log_id: RwLock<Option<LogId<ExampleNodeId>>>,
+pub struct DcacheStore {
+    last_purged_log_id: RwLock<Option<LogId<DcacheNodeId>>>,
 
     /// The Raft log.
-    log: RwLock<BTreeMap<u64, Entry<ExampleTypeConfig>>>,
+    log: RwLock<BTreeMap<u64, Entry<DcacheTypeConfig>>>,
 
     /// The Raft state machine.
-    pub state_machine: RwLock<ExampleStateMachine>,
+    pub state_machine: RwLock<DcacheStateMachine>,
 
     /// The current granted vote.
-    vote: RwLock<Option<Vote<ExampleNodeId>>>,
+    vote: RwLock<Option<Vote<DcacheNodeId>>>,
 
     snapshot_idx: Arc<Mutex<u64>>,
 
-    current_snapshot: RwLock<Option<ExampleSnapshot>>,
+    current_snapshot: RwLock<Option<DcacheSnapshot>>,
 }
 
-impl ExampleStore {
+impl DcacheStore {
     pub fn new(salt: String) -> Self {
-        let state_machine = RwLock::new(ExampleStateMachine {
+        let state_machine = RwLock::new(DcacheStateMachine {
             last_applied_log: Default::default(),
             last_membership: Default::default(),
             data: system::init_system(salt),
@@ -199,10 +199,10 @@ impl ExampleStore {
 }
 
 #[async_trait]
-impl RaftLogReader<ExampleTypeConfig> for Arc<ExampleStore> {
+impl RaftLogReader<DcacheTypeConfig> for Arc<DcacheStore> {
     async fn get_log_state(
         &mut self,
-    ) -> Result<LogState<ExampleTypeConfig>, StorageError<ExampleNodeId>> {
+    ) -> Result<LogState<DcacheTypeConfig>, StorageError<DcacheNodeId>> {
         let log = self.log.read().await;
         let last = log.iter().rev().next().map(|(_, ent)| ent.log_id);
 
@@ -222,7 +222,7 @@ impl RaftLogReader<ExampleTypeConfig> for Arc<ExampleStore> {
     async fn try_get_log_entries<RB: RangeBounds<u64> + Clone + Debug + Send + Sync>(
         &mut self,
         range: RB,
-    ) -> Result<Vec<Entry<ExampleTypeConfig>>, StorageError<ExampleNodeId>> {
+    ) -> Result<Vec<Entry<DcacheTypeConfig>>, StorageError<DcacheNodeId>> {
         let log = self.log.read().await;
         let response = log
             .range(range.clone())
@@ -233,11 +233,11 @@ impl RaftLogReader<ExampleTypeConfig> for Arc<ExampleStore> {
 }
 
 #[async_trait]
-impl RaftSnapshotBuilder<ExampleTypeConfig, Cursor<Vec<u8>>> for Arc<ExampleStore> {
+impl RaftSnapshotBuilder<DcacheTypeConfig, Cursor<Vec<u8>>> for Arc<DcacheStore> {
     #[tracing::instrument(level = "trace", skip(self))]
     async fn build_snapshot(
         &mut self,
-    ) -> Result<Snapshot<ExampleNodeId, BasicNode, Cursor<Vec<u8>>>, StorageError<ExampleNodeId>>
+    ) -> Result<Snapshot<DcacheNodeId, BasicNode, Cursor<Vec<u8>>>, StorageError<DcacheNodeId>>
     {
         let data;
         let last_applied_log;
@@ -279,7 +279,7 @@ impl RaftSnapshotBuilder<ExampleTypeConfig, Cursor<Vec<u8>>> for Arc<ExampleStor
             snapshot_id,
         };
 
-        let snapshot = ExampleSnapshot {
+        let snapshot = DcacheSnapshot {
             meta: meta.clone(),
             data: data.clone(),
         };
@@ -297,7 +297,7 @@ impl RaftSnapshotBuilder<ExampleTypeConfig, Cursor<Vec<u8>>> for Arc<ExampleStor
 }
 
 #[async_trait]
-impl RaftStorage<ExampleTypeConfig> for Arc<ExampleStore> {
+impl RaftStorage<DcacheTypeConfig> for Arc<DcacheStore> {
     type SnapshotData = Cursor<Vec<u8>>;
     type LogReader = Self;
     type SnapshotBuilder = Self;
@@ -305,8 +305,8 @@ impl RaftStorage<ExampleTypeConfig> for Arc<ExampleStore> {
     #[tracing::instrument(level = "trace", skip(self))]
     async fn save_vote(
         &mut self,
-        vote: &Vote<ExampleNodeId>,
-    ) -> Result<(), StorageError<ExampleNodeId>> {
+        vote: &Vote<DcacheNodeId>,
+    ) -> Result<(), StorageError<DcacheNodeId>> {
         let mut v = self.vote.write().await;
         *v = Some(*vote);
         Ok(())
@@ -314,15 +314,15 @@ impl RaftStorage<ExampleTypeConfig> for Arc<ExampleStore> {
 
     async fn read_vote(
         &mut self,
-    ) -> Result<Option<Vote<ExampleNodeId>>, StorageError<ExampleNodeId>> {
+    ) -> Result<Option<Vote<DcacheNodeId>>, StorageError<DcacheNodeId>> {
         Ok(*self.vote.read().await)
     }
 
     #[tracing::instrument(level = "trace", skip(self, entries))]
     async fn append_to_log(
         &mut self,
-        entries: &[&Entry<ExampleTypeConfig>],
-    ) -> Result<(), StorageError<ExampleNodeId>> {
+        entries: &[&Entry<DcacheTypeConfig>],
+    ) -> Result<(), StorageError<DcacheNodeId>> {
         let mut log = self.log.write().await;
         for entry in entries {
             log.insert(entry.log_id.index, (*entry).clone());
@@ -333,8 +333,8 @@ impl RaftStorage<ExampleTypeConfig> for Arc<ExampleStore> {
     #[tracing::instrument(level = "debug", skip(self))]
     async fn delete_conflict_logs_since(
         &mut self,
-        log_id: LogId<ExampleNodeId>,
-    ) -> Result<(), StorageError<ExampleNodeId>> {
+        log_id: LogId<DcacheNodeId>,
+    ) -> Result<(), StorageError<DcacheNodeId>> {
         tracing::debug!("delete_log: [{:?}, +oo)", log_id);
 
         let mut log = self.log.write().await;
@@ -352,8 +352,8 @@ impl RaftStorage<ExampleTypeConfig> for Arc<ExampleStore> {
     #[tracing::instrument(level = "debug", skip(self))]
     async fn purge_logs_upto(
         &mut self,
-        log_id: LogId<ExampleNodeId>,
-    ) -> Result<(), StorageError<ExampleNodeId>> {
+        log_id: LogId<DcacheNodeId>,
+    ) -> Result<(), StorageError<DcacheNodeId>> {
         tracing::debug!("delete_log: [{:?}, +oo)", log_id);
 
         {
@@ -381,10 +381,10 @@ impl RaftStorage<ExampleTypeConfig> for Arc<ExampleStore> {
         &mut self,
     ) -> Result<
         (
-            Option<LogId<ExampleNodeId>>,
-            StoredMembership<ExampleNodeId, BasicNode>,
+            Option<LogId<DcacheNodeId>>,
+            StoredMembership<DcacheNodeId, BasicNode>,
         ),
-        StorageError<ExampleNodeId>,
+        StorageError<DcacheNodeId>,
     > {
         let state_machine = self.state_machine.read().await;
         Ok((
@@ -396,8 +396,8 @@ impl RaftStorage<ExampleTypeConfig> for Arc<ExampleStore> {
     #[tracing::instrument(level = "trace", skip(self, entries))]
     async fn apply_to_state_machine(
         &mut self,
-        entries: &[&Entry<ExampleTypeConfig>],
-    ) -> Result<Vec<ExampleResponse>, StorageError<ExampleNodeId>> {
+        entries: &[&Entry<DcacheTypeConfig>],
+    ) -> Result<Vec<DcacheResponse>, StorageError<DcacheNodeId>> {
         let mut res = Vec::with_capacity(entries.len());
 
         let mut sm = self.state_machine.write().await;
@@ -408,9 +408,9 @@ impl RaftStorage<ExampleTypeConfig> for Arc<ExampleStore> {
             sm.last_applied_log = Some(entry.log_id);
 
             match entry.payload {
-                EntryPayload::Blank => res.push(ExampleResponse::Empty),
+                EntryPayload::Blank => res.push(DcacheResponse::Empty),
                 EntryPayload::Normal(ref req) => match req {
-                    ExampleRequest::AddVisitor(msg) => {
+                    DcacheRequest::AddVisitor(msg) => {
                         let r = sm
                             .data
                             .master
@@ -421,9 +421,9 @@ impl RaftStorage<ExampleTypeConfig> for Arc<ExampleStore> {
                             .unwrap()
                             .unwrap();
 
-                        res.push(ExampleResponse::AddVisitorResult(r));
+                        res.push(DcacheResponse::AddVisitorResult(r));
                     }
-                    ExampleRequest::AddCaptcha(msg) => {
+                    DcacheRequest::AddCaptcha(msg) => {
                         sm.data
                             .master
                             .send(msg.clone())
@@ -432,9 +432,9 @@ impl RaftStorage<ExampleTypeConfig> for Arc<ExampleStore> {
                             .await
                             .unwrap()
                             .unwrap();
-                        res.push(ExampleResponse::Empty);
+                        res.push(DcacheResponse::Empty);
                     }
-                    ExampleRequest::RenameCaptcha(msg) => {
+                    DcacheRequest::RenameCaptcha(msg) => {
                         sm.data
                             .master
                             .send(msg.clone())
@@ -443,9 +443,9 @@ impl RaftStorage<ExampleTypeConfig> for Arc<ExampleStore> {
                             .await
                             .unwrap()
                             .unwrap();
-                        res.push(ExampleResponse::Empty);
+                        res.push(DcacheResponse::Empty);
                     }
-                    ExampleRequest::RemoveCaptcha(msg) => {
+                    DcacheRequest::RemoveCaptcha(msg) => {
                         sm.data
                             .master
                             .send(msg.clone())
@@ -454,12 +454,12 @@ impl RaftStorage<ExampleTypeConfig> for Arc<ExampleStore> {
                             .await
                             .unwrap()
                             .unwrap();
-                        res.push(ExampleResponse::Empty);
+                        res.push(DcacheResponse::Empty);
                     }
                 },
                 EntryPayload::Membership(ref mem) => {
                     sm.last_membership = StoredMembership::new(Some(entry.log_id), mem.clone());
-                    res.push(ExampleResponse::Empty)
+                    res.push(DcacheResponse::Empty)
                 }
             };
         }
@@ -469,22 +469,22 @@ impl RaftStorage<ExampleTypeConfig> for Arc<ExampleStore> {
     #[tracing::instrument(level = "trace", skip(self))]
     async fn begin_receiving_snapshot(
         &mut self,
-    ) -> Result<Box<Self::SnapshotData>, StorageError<ExampleNodeId>> {
+    ) -> Result<Box<Self::SnapshotData>, StorageError<DcacheNodeId>> {
         Ok(Box::new(Cursor::new(Vec::new())))
     }
 
     #[tracing::instrument(level = "trace", skip(self, snapshot))]
     async fn install_snapshot(
         &mut self,
-        meta: &SnapshotMeta<ExampleNodeId, BasicNode>,
+        meta: &SnapshotMeta<DcacheNodeId, BasicNode>,
         snapshot: Box<Self::SnapshotData>,
-    ) -> Result<(), StorageError<ExampleNodeId>> {
+    ) -> Result<(), StorageError<DcacheNodeId>> {
         tracing::info!(
             { snapshot_size = snapshot.get_ref().len() },
             "decoding snapshot for installation"
         );
 
-        let new_snapshot = ExampleSnapshot {
+        let new_snapshot = DcacheSnapshot {
             meta: meta.clone(),
             data: snapshot.into_inner(),
         };
@@ -517,8 +517,8 @@ impl RaftStorage<ExampleTypeConfig> for Arc<ExampleStore> {
     async fn get_current_snapshot(
         &mut self,
     ) -> Result<
-        Option<Snapshot<ExampleNodeId, BasicNode, Self::SnapshotData>>,
-        StorageError<ExampleNodeId>,
+        Option<Snapshot<DcacheNodeId, BasicNode, Self::SnapshotData>>,
+        StorageError<DcacheNodeId>,
     > {
         match &*self.current_snapshot.read().await {
             Some(snapshot) => {