diff --git a/core_impl.go b/core_impl.go
index b56055e..ada5363 100644
--- a/core_impl.go
+++ b/core_impl.go
@@ -218,7 +218,7 @@ func (cd *CustomDiff) OnLogin(e Event) {
 //	if limiter.Allow("203.0.113.42:3333") { /* accept */ }
 func NewRateLimiter(cfg RateLimit) *RateLimiter {
 	return &RateLimiter{
-		cfg:     cfg,
+		config:  cfg,
 		buckets: make(map[string]*tokenBucket),
 		banned:  make(map[string]time.Time),
 	}
@@ -226,7 +226,7 @@ func NewRateLimiter(cfg RateLimit) *RateLimiter {
 
 // Allow returns true if the IP address is permitted to open a new connection.
 func (rl *RateLimiter) Allow(ip string) bool {
-	if rl == nil || rl.cfg.MaxConnectionsPerMinute <= 0 {
+	if rl == nil || rl.config.MaxConnectionsPerMinute <= 0 {
 		return true
 	}
 	host := hostOnly(ip)
@@ -244,14 +244,14 @@ func (rl *RateLimiter) Allow(ip string) bool {
 
 	bucket, ok := rl.buckets[host]
 	if !ok {
-		bucket = &tokenBucket{tokens: rl.cfg.MaxConnectionsPerMinute, lastRefill: now}
+		bucket = &tokenBucket{tokens: rl.config.MaxConnectionsPerMinute, lastRefill: now}
 		rl.buckets[host] = bucket
 	}
 
-	refillBucket(bucket, rl.cfg.MaxConnectionsPerMinute, now)
+	refillBucket(bucket, rl.config.MaxConnectionsPerMinute, now)
 	if bucket.tokens <= 0 {
-		if rl.cfg.BanDurationSeconds > 0 {
-			rl.banned[host] = now.Add(time.Duration(rl.cfg.BanDurationSeconds) * time.Second)
+		if rl.config.BanDurationSeconds > 0 {
+			rl.banned[host] = now.Add(time.Duration(rl.config.BanDurationSeconds) * time.Second)
 		}
 		return false
 	}
@@ -263,7 +263,7 @@ func (rl *RateLimiter) Allow(ip string) bool {
 
 // Tick removes expired ban entries and refills token buckets.
 func (rl *RateLimiter) Tick() {
-	if rl == nil || rl.cfg.MaxConnectionsPerMinute <= 0 {
+	if rl == nil || rl.config.MaxConnectionsPerMinute <= 0 {
 		return
 	}
 	now := time.Now()
@@ -277,7 +277,7 @@ func (rl *RateLimiter) Tick() {
 		}
 	}
 	for _, bucket := range rl.buckets {
-		refillBucket(bucket, rl.cfg.MaxConnectionsPerMinute, now)
+		refillBucket(bucket, rl.config.MaxConnectionsPerMinute, now)
 	}
 }
 
diff --git a/pool/client.go b/pool/client.go
index 6f7f60f..3b23e4c 100644
--- a/pool/client.go
+++ b/pool/client.go
@@ -19,7 +19,7 @@ import (
 //	client := pool.NewStratumClient(poolCfg, listener)
 //	client.Connect()
 type StratumClient struct {
-	cfg        proxy.PoolConfig
+	config     proxy.PoolConfig
 	listener   StratumListener
 	conn       net.Conn
 	tlsConn    *tls.Conn // nil if plain TCP
diff --git a/pool/impl.go b/pool/impl.go
index bf48b03..64acfb9 100644
--- a/pool/impl.go
+++ b/pool/impl.go
@@ -27,7 +27,7 @@ func NewStrategyFactory(cfg *proxy.Config) StrategyFactory {
 // NewStratumClient constructs a pool client.
 func NewStratumClient(cfg proxy.PoolConfig, listener StratumListener) *StratumClient {
 	return &StratumClient{
-		cfg:      cfg,
+		config:   cfg,
 		listener: listener,
 		pending:  make(map[int64]struct{}),
 	}
@@ -48,7 +48,7 @@ func (c *StratumClient) Connect() proxy.Result {
 	if c == nil {
 		return proxy.Result{OK: false, Error: errors.New("client is nil")}
 	}
-	addr := c.cfg.URL
+	addr := c.config.URL
 	if addr == "" {
 		return proxy.Result{OK: false, Error: errors.New("pool url is empty")}
 	}
@@ -56,7 +56,7 @@ func (c *StratumClient) Connect() proxy.Result {
 	if err != nil {
 		return proxy.Result{OK: false, Error: err}
 	}
-	if c.cfg.TLS {
+	if c.config.TLS {
 		host := addr
 		if strings.Contains(addr, ":") {
 			host, _, _ = net.SplitHostPort(addr)
@@ -67,7 +67,7 @@ func (c *StratumClient) Connect() proxy.Result {
 			_ = conn.Close()
 			return proxy.Result{OK: false, Error: err}
 		}
-		if fp := strings.TrimSpace(strings.ToLower(c.cfg.TLSFingerprint)); fp != "" {
+		if fp := strings.TrimSpace(strings.ToLower(c.config.TLSFingerprint)); fp != "" {
 			cert := tlsConn.ConnectionState().PeerCertificates
 			if len(cert) == 0 {
 				_ = tlsConn.Close()
@@ -94,14 +94,14 @@ func (c *StratumClient) Login() {
 		return
 	}
 	params := map[string]any{
-		"login": c.cfg.User,
-		"pass":  c.cfg.Pass,
+		"login": c.config.User,
+		"pass":  c.config.Pass,
 	}
-	if c.cfg.RigID != "" {
-		params["rigid"] = c.cfg.RigID
+	if c.config.RigID != "" {
+		params["rigid"] = c.config.RigID
 	}
-	if c.cfg.Algo != "" {
-		params["algo"] = []string{c.cfg.Algo}
+	if c.config.Algo != "" {
+		params["algo"] = []string{c.config.Algo}
 	}
 	req := map[string]any{
 		"id":      1,
@@ -339,7 +339,7 @@ func NewFailoverStrategy(pools []proxy.PoolConfig, listener StratumListener, cfg
 	return &FailoverStrategy{
 		pools:    pools,
 		listener: listener,
-		cfg:      cfg,
+		config:   cfg,
 	}
 }
 
@@ -361,12 +361,12 @@ func (s *FailoverStrategy) connectLocked(start int) {
 	}
 	retries := 1
 	retryPause := time.Second
-	if s.cfg != nil {
-		if s.cfg.Retries > 0 {
-			retries = s.cfg.Retries
+	if s.config != nil {
+		if s.config.Retries > 0 {
+			retries = s.config.Retries
 		}
-		if s.cfg.RetryPause > 0 {
-			retryPause = time.Duration(s.cfg.RetryPause) * time.Second
+		if s.config.RetryPause > 0 {
+			retryPause = time.Duration(s.config.RetryPause) * time.Second
 		}
 	}
 	for attempt := 0; attempt < retries; attempt++ {
@@ -389,8 +389,8 @@ func (s *FailoverStrategy) currentPools() []proxy.PoolConfig {
 	if s == nil {
 		return nil
 	}
-	if s.cfg != nil && len(s.cfg.Pools) > 0 {
-		return s.cfg.Pools
+	if s.config != nil && len(s.config.Pools) > 0 {
+		return s.config.Pools
 	}
 	return s.pools
 }
@@ -431,7 +431,7 @@ func (s *FailoverStrategy) Tick(ticks uint64) {
 	s.mu.Lock()
 	client := s.client
 	s.mu.Unlock()
-	if client != nil && client.cfg.Keepalive {
+	if client != nil && client.config.Keepalive {
 		client.Keepalive()
 	}
 }
diff --git a/pool/strategy.go b/pool/strategy.go
index c9e1986..c2ed1df 100644
--- a/pool/strategy.go
+++ b/pool/strategy.go
@@ -17,7 +17,7 @@ type FailoverStrategy struct {
 	current  int
 	client   *StratumClient
 	listener StratumListener
-	cfg      *proxy.Config
+	config   *proxy.Config
 	closing  bool
 	mu       sync.Mutex
 }
diff --git a/proxy.go b/proxy.go
index c9a8e8d..dfee952 100644
--- a/proxy.go
+++ b/proxy.go
@@ -106,7 +106,7 @@ type ConfigWatcher struct {
 //	rl := proxy.NewRateLimiter(proxy.RateLimit{MaxConnectionsPerMinute: 30, BanDurationSeconds: 300})
 //	if rl.Allow("1.2.3.4:3333") { proceed() }
 type RateLimiter struct {
-	cfg     RateLimit
+	config  RateLimit
 	buckets map[string]*tokenBucket
 	banned  map[string]time.Time
 	mu      sync.Mutex
diff --git a/splitter/nicehash/impl.go b/splitter/nicehash/impl.go
index 654a484..542acaa 100644
--- a/splitter/nicehash/impl.go
+++ b/splitter/nicehash/impl.go
@@ -20,7 +20,7 @@ func NewNonceSplitter(cfg *proxy.Config, events *proxy.EventBus, factory pool.St
 	}
 	return &NonceSplitter{
 		byID:            make(map[int64]*NonceMapper),
-		cfg:             cfg,
+		config:          cfg,
 		events:          events,
 		strategyFactory: factory,
 	}
@@ -171,7 +171,7 @@ func (s *NonceSplitter) Disconnect() {
 func (s *NonceSplitter) addMapperLocked() *NonceMapper {
 	id := s.seq
 	s.seq++
-	mapper := NewNonceMapper(id, s.cfg, nil)
+	mapper := NewNonceMapper(id, s.config, nil)
 	mapper.events = s.events
 	mapper.lastUsed = time.Now()
 	mapper.strategy = s.strategyFactory(mapper)
@@ -191,7 +191,7 @@ func NewNonceMapper(id int64, cfg *proxy.Config, strategy pool.Strategy) *NonceM
 		storage:  NewNonceStorage(),
 		strategy: strategy,
 		pending:  make(map[int64]SubmitContext),
-		cfg:      cfg,
+		config:   cfg,
 	}
 }
 
diff --git a/splitter/nicehash/mapper.go b/splitter/nicehash/mapper.go
index 1b51044..fa192fd 100644
--- a/splitter/nicehash/mapper.go
+++ b/splitter/nicehash/mapper.go
@@ -18,7 +18,7 @@ type NonceMapper struct {
 	storage   *NonceStorage
 	strategy  pool.Strategy           // manages pool client lifecycle and failover
 	pending   map[int64]SubmitContext // sequence → {requestID, minerID}
-	cfg       *proxy.Config
+	config    *proxy.Config
 	events    *proxy.EventBus
 	active    bool // true once pool has sent at least one job
 	suspended int  // > 0 when pool connection is in error/reconnecting
diff --git a/splitter/nicehash/splitter.go b/splitter/nicehash/splitter.go
index 27cd940..e766d7c 100644
--- a/splitter/nicehash/splitter.go
+++ b/splitter/nicehash/splitter.go
@@ -24,7 +24,7 @@ import (
 type NonceSplitter struct {
 	mappers         []*NonceMapper
 	byID            map[int64]*NonceMapper
-	cfg             *proxy.Config
+	config          *proxy.Config
 	events          *proxy.EventBus
 	strategyFactory pool.StrategyFactory
 	mu              sync.RWMutex
diff --git a/splitter/simple/impl.go b/splitter/simple/impl.go
index 9f7c7eb..3fee973 100644
--- a/splitter/simple/impl.go
+++ b/splitter/simple/impl.go
@@ -21,7 +21,7 @@ func NewSimpleSplitter(cfg *proxy.Config, events *proxy.EventBus, factory pool.S
 	return &SimpleSplitter{
 		active:  make(map[int64]*SimpleMapper),
 		idle:    make(map[int64]*SimpleMapper),
-		cfg:     cfg,
+		config:  cfg,
 		events:  events,
 		factory: factory,
 	}
@@ -55,9 +55,9 @@ func (s *SimpleSplitter) OnLogin(event *proxy.LoginEvent) {
 	defer s.mu.Unlock()
 	now := time.Now()
 
-	if s.cfg.ReuseTimeout > 0 {
+	if s.config.ReuseTimeout > 0 {
 		for id, mapper := range s.idle {
-			if mapper.strategy != nil && mapper.strategy.IsActive() && !mapper.idleAt.IsZero() && now.Sub(mapper.idleAt) <= time.Duration(s.cfg.ReuseTimeout)*time.Second {
+			if mapper.strategy != nil && mapper.strategy.IsActive() && !mapper.idleAt.IsZero() && now.Sub(mapper.idleAt) <= time.Duration(s.config.ReuseTimeout)*time.Second {
 				delete(s.idle, id)
 				mapper.miner = event.Miner
 				mapper.idleAt = time.Time{}
@@ -109,7 +109,7 @@ func (s *SimpleSplitter) OnClose(event *proxy.CloseEvent) {
 	mapper.miner = nil
 	mapper.idleAt = time.Now()
 	event.Miner.SetRouteID(-1)
-	if s.cfg.ReuseTimeout > 0 {
+	if s.config.ReuseTimeout > 0 {
 		s.idle[mapper.id] = mapper
 		return
 	}
@@ -128,7 +128,7 @@ func (s *SimpleSplitter) GC() {
 	defer s.mu.Unlock()
 	now := time.Now()
 	for id, mapper := range s.idle {
-		if mapper.stopped || (s.cfg.ReuseTimeout > 0 && now.Sub(mapper.idleAt) > time.Duration(s.cfg.ReuseTimeout)*time.Second) {
+		if mapper.stopped || (s.config.ReuseTimeout > 0 && now.Sub(mapper.idleAt) > time.Duration(s.config.ReuseTimeout)*time.Second) {
 			if mapper.strategy != nil {
 				mapper.strategy.Disconnect()
 			}
diff --git a/splitter/simple/splitter.go b/splitter/simple/splitter.go
index a78ccea..28ba70b 100644
--- a/splitter/simple/splitter.go
+++ b/splitter/simple/splitter.go
@@ -20,7 +20,7 @@ import (
 type SimpleSplitter struct {
 	active  map[int64]*SimpleMapper // minerID → mapper
 	idle    map[int64]*SimpleMapper // mapperID → mapper (reuse pool, keyed by mapper seq)
-	cfg     *proxy.Config
+	config  *proxy.Config
 	events  *proxy.EventBus
 	factory pool.StrategyFactory
 	mu      sync.Mutex
diff --git a/state_impl.go b/state_impl.go
index bae4892..4c70211 100644
--- a/state_impl.go
+++ b/state_impl.go
@@ -1663,7 +1663,7 @@ func (s *Server) listen() Result {
 
 // IsActive reports whether the limiter has enabled rate limiting.
 func (rl *RateLimiter) IsActive() bool {
-	return rl != nil && rl.cfg.MaxConnectionsPerMinute > 0
+	return rl != nil && rl.config.MaxConnectionsPerMinute > 0
 }
 
 func nextMinerID() int64 { return atomic.AddInt64(&minerSeq, 1) }