diff --git a/hub/db/db.py b/hub/db/db.py
index f14fe93..6d9c1a8 100644
--- a/hub/db/db.py
+++ b/hub/db/db.py
@@ -18,7 +18,7 @@ from hub.schema.url import URL, normalize_name
 from hub.schema.claim import guess_stream_type
 from hub.schema.result import Censor
 from hub.scribe.transaction import TxInput
-from hub.common import hash_to_hex_str, LRUCacheWithMetrics
+from hub.common import hash_to_hex_str, LRUCacheWithMetrics, LFUCacheWithMetrics
 from hub.db.merkle import Merkle, MerkleCache, FastMerkleCacheItem
 from hub.db.common import ResolveResult, ExpandedResolveResult, DBError, UTXO
 from hub.db.prefixes import PendingActivationValue, ClaimTakeoverValue, ClaimToTXOValue, PrefixDB
@@ -90,9 +90,9 @@ class SecondaryDB:
         self.header_mc = MerkleCache(self.merkle, self.fs_block_hashes)
 
         # lru cache of tx_hash: (tx_bytes, tx_num, position, tx_height)
-        self.tx_cache = LRUCacheWithMetrics(tx_cache_size, metric_name='tx', namespace=NAMESPACE)
+        self.tx_cache = LFUCacheWithMetrics(tx_cache_size, metric_name='tx', namespace=NAMESPACE)
         # lru cache of block heights to merkle trees of the block tx hashes
-        self.merkle_cache = LRUCacheWithMetrics(merkle_cache_size, metric_name='merkle', namespace=NAMESPACE)
+        self.merkle_cache = LFUCacheWithMetrics(merkle_cache_size, metric_name='merkle', namespace=NAMESPACE)
 
         # these are only used if the cache_all_tx_hashes setting is on
         self.total_transactions: List[bytes] = []
diff --git a/hub/herald/session.py b/hub/herald/session.py
index 521d8b9..e3eff23 100644
--- a/hub/herald/session.py
+++ b/hub/herald/session.py
@@ -23,7 +23,7 @@ from hub.build_info import BUILD, COMMIT_HASH, DOCKER_TAG
 from hub.herald.search import SearchIndex
 from hub.common import sha256, hash_to_hex_str, hex_str_to_hash, HASHX_LEN, version_string, formatted_time, SIZE_BUCKETS
 from hub.common import protocol_version, RPCError, DaemonError, TaskGroup, HISTOGRAM_BUCKETS, asyncify_for_loop
-from hub.common import LRUCacheWithMetrics
+from hub.common import LRUCacheWithMetrics, LFUCacheWithMetrics
 from hub.herald.jsonrpc import JSONRPCAutoDetect, JSONRPCConnection, JSONRPCv2, JSONRPC
 from hub.herald.common import BatchRequest, ProtocolError, Request, Batch, Notification
 from hub.herald.framer import NewlineFramer
@@ -214,11 +214,11 @@ class SessionManager:
         )
         self.running = False
         # hashX: List[int]
-        self.hashX_raw_history_cache = LRUCacheWithMetrics(2 ** 16, metric_name='raw_history', namespace=NAMESPACE)
+        self.hashX_raw_history_cache = LFUCacheWithMetrics(2 ** 16, metric_name='raw_history', namespace=NAMESPACE)
         # hashX: List[CachedAddressHistoryItem]
-        self.hashX_history_cache = LRUCacheWithMetrics(2 ** 14, metric_name='full_history', namespace=NAMESPACE)
+        self.hashX_history_cache = LFUCacheWithMetrics(2 ** 14, metric_name='full_history', namespace=NAMESPACE)
         # tx_num: Tuple[txid, height]
-        self.history_tx_info_cache = LRUCacheWithMetrics(2 ** 19, metric_name='history_tx', namespace=NAMESPACE)
+        self.history_tx_info_cache = LFUCacheWithMetrics(2 ** 17, metric_name='history_tx', namespace=NAMESPACE)
 
     def clear_caches(self):
         self.resolve_cache.clear()
@@ -246,8 +246,9 @@ class SessionManager:
             total_tx_nums = list(total_tx_nums)
             # collect the total new tx infos
             referenced_new_txs = {
-                tx_num: (CachedAddressHistoryItem(tx_hash=tx_hash[::-1].hex(), height=bisect_right(self.db.tx_counts, tx_num)))
-                for tx_num, tx_hash in zip(total_tx_nums, self.db._get_tx_hashes(total_tx_nums))
+                tx_num: (CachedAddressHistoryItem(
+                    tx_hash=tx_hash[::-1].hex(), height=bisect_right(self.db.tx_counts, tx_num)
+                )) for tx_num, tx_hash in zip(total_tx_nums, self.db._get_tx_hashes(total_tx_nums))
             }
             # update the cached history lists
             get_referenced = referenced_new_txs.__getitem__
diff --git a/hub/scribe/service.py b/hub/scribe/service.py
index 8eadb30..ec757f9 100644
--- a/hub/scribe/service.py
+++ b/hub/scribe/service.py
@@ -11,7 +11,7 @@ from hub import PROMETHEUS_NAMESPACE
 from hub.db.prefixes import ACTIVATED_SUPPORT_TXO_TYPE, ACTIVATED_CLAIM_TXO_TYPE
 from hub.db.prefixes import PendingActivationKey, PendingActivationValue, ClaimToTXOValue
 from hub.error.base import ChainError
-from hub.common import hash_to_hex_str, hash160, RPCError, HISTOGRAM_BUCKETS, StagedClaimtrieItem, sha256, LRUCache
+from hub.common import hash_to_hex_str, hash160, RPCError, HISTOGRAM_BUCKETS, StagedClaimtrieItem, sha256, LFUCache, LRUCache
 from hub.scribe.db import PrimaryDB
 from hub.scribe.daemon import LBCDaemon
 from hub.scribe.transaction import Tx, TxOutput, TxInput, Block
@@ -122,9 +122,9 @@ class BlockchainProcessorService(BlockchainService):
         self.pending_transaction_num_mapping: Dict[bytes, int] = {}
         self.pending_transactions: Dict[int, bytes] = {}
 
-        self.hashX_history_cache = LRUCache(max(100, env.hashX_history_cache_size))
-        self.hashX_full_cache = LRUCache(max(100, env.hashX_history_cache_size))
-        self.history_tx_info_cache = LRUCache(2 ** 16)
+        self.hashX_history_cache = LFUCache(max(100, env.hashX_history_cache_size))
+        self.hashX_full_cache = LFUCache(max(100, env.hashX_history_cache_size))
+        self.history_tx_info_cache = LFUCache(2 ** 17)
 
     def open_db(self):
         env = self.env