refactor(sync): optimize, make LRU Cache hit more

source/libs/sync/inc/syncInt.h

@@ -225,6 +225,7 @@ int32_t syncNodeRestartHeartbeatTimer(SSyncNode* pSyncNode);
 int32_t   syncNodeSendMsgById(const SRaftId* destRaftId, SSyncNode* pSyncNode, SRpcMsg* pMsg);
 int32_t   syncNodeSendMsgByInfo(const SNodeInfo* nodeInfo, SSyncNode* pSyncNode, SRpcMsg* pMsg);
 SyncIndex syncMinMatchIndex(SSyncNode* pSyncNode);
+int32_t   syncCacheEntry(SSyncLogStore* pLogStore, SSyncRaftEntry* pEntry, LRUHandle** h);
 
 // raft state change --------------
 void syncNodeUpdateTerm(SSyncNode* pSyncNode, SyncTerm term);

source/libs/sync/src/syncAppendEntries.c

@@ -192,13 +192,34 @@ int32_t syncNodeOnAppendEntries(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
     SSyncRaftEntry* pAppendEntry = syncEntryBuildFromAppendEntries(pMsg);
     ASSERT(pAppendEntry != NULL);
 
-    SyncIndex       appendIndex = pMsg->prevLogIndex + 1;
+    SyncIndex appendIndex = pMsg->prevLogIndex + 1;
+
+    LRUHandle* hLocal = NULL;
+    LRUHandle* hAppend = NULL;
+
+    int32_t         code = 0;
     SSyncRaftEntry* pLocalEntry = NULL;
-    int32_t         code = ths->pLogStore->syncLogGetEntry(ths->pLogStore, appendIndex, &pLocalEntry);
+    SLRUCache*      pCache = ths->pLogStore->pCache;
+    hLocal = taosLRUCacheLookup(pCache, &appendIndex, sizeof(appendIndex));
+    if (hLocal) {
+      pLocalEntry = (SSyncRaftEntry*)taosLRUCacheValue(pCache, hLocal);
+      code = 0;
+
+      sNTrace(ths, "hit cache index:%" PRId64 ", bytes:%u, %p", appendIndex, pLocalEntry->bytes, pLocalEntry);
+
+    } else {
+      sNTrace(ths, "miss cache index:%" PRId64, appendIndex);
+
+      code = ths->pLogStore->syncLogGetEntry(ths->pLogStore, appendIndex, &pLocalEntry);
+    }
+
     if (code == 0) {
+      // get local entry success
+
       if (pLocalEntry->term == pAppendEntry->term) {
         // do nothing
         sNTrace(ths, "log match, do nothing, index:%" PRId64, appendIndex);
+
       } else {
         // truncate
         code = ths->pLogStore->syncLogTruncate(ths->pLogStore, appendIndex);
@@ -207,8 +228,18 @@ int32_t syncNodeOnAppendEntries(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
           snprintf(logBuf, sizeof(logBuf), "ignore, truncate error, append-index:%" PRId64, appendIndex);
           syncLogRecvAppendEntries(ths, pMsg, logBuf);
 
-          syncEntryDestory(pLocalEntry);
-          syncEntryDestory(pAppendEntry);
+          if (hLocal) {
+            taosLRUCacheRelease(ths->pLogStore->pCache, hLocal, false);
+          } else {
+            syncEntryDestory(pLocalEntry);
+          }
+
+          if (hAppend) {
+            taosLRUCacheRelease(ths->pLogStore->pCache, hAppend, false);
+          } else {
+            syncEntryDestory(pAppendEntry);
+          }
+
           goto _IGNORE;
         }
 
@@ -219,10 +250,22 @@ int32_t syncNodeOnAppendEntries(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
           snprintf(logBuf, sizeof(logBuf), "ignore, append error, append-index:%" PRId64, appendIndex);
           syncLogRecvAppendEntries(ths, pMsg, logBuf);
 
-          syncEntryDestory(pLocalEntry);
-          syncEntryDestory(pAppendEntry);
+          if (hLocal) {
+            taosLRUCacheRelease(ths->pLogStore->pCache, hLocal, false);
+          } else {
+            syncEntryDestory(pLocalEntry);
+          }
+
+          if (hAppend) {
+            taosLRUCacheRelease(ths->pLogStore->pCache, hAppend, false);
+          } else {
+            syncEntryDestory(pAppendEntry);
+          }
+
           goto _IGNORE;
         }
+
+        syncCacheEntry(ths->pLogStore, pAppendEntry, &hAppend);
       }
 
     } else {
@@ -248,20 +291,42 @@ int32_t syncNodeOnAppendEntries(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
           snprintf(logBuf, sizeof(logBuf), "ignore, log not exist, append error, append-index:%" PRId64, appendIndex);
           syncLogRecvAppendEntries(ths, pMsg, logBuf);
 
-          syncEntryDestory(pLocalEntry);
-          syncEntryDestory(pAppendEntry);
+          if (hLocal) {
+            taosLRUCacheRelease(ths->pLogStore->pCache, hLocal, false);
+          } else {
+            syncEntryDestory(pLocalEntry);
+          }
+
+          if (hAppend) {
+            taosLRUCacheRelease(ths->pLogStore->pCache, hAppend, false);
+          } else {
+            syncEntryDestory(pAppendEntry);
+          }
+
           goto _IGNORE;
         }
 
+        syncCacheEntry(ths->pLogStore, pAppendEntry, &hAppend);
+
       } else {
-        // error
+        // get local entry success
         char logBuf[128];
         snprintf(logBuf, sizeof(logBuf), "ignore, get local entry error, append-index:%" PRId64 " err:%d", appendIndex,
                  terrno);
         syncLogRecvAppendEntries(ths, pMsg, logBuf);
 
-        syncEntryDestory(pLocalEntry);
-        syncEntryDestory(pAppendEntry);
+        if (hLocal) {
+          taosLRUCacheRelease(ths->pLogStore->pCache, hLocal, false);
+        } else {
+          syncEntryDestory(pLocalEntry);
+        }
+
+        if (hAppend) {
+          taosLRUCacheRelease(ths->pLogStore->pCache, hAppend, false);
+        } else {
+          syncEntryDestory(pAppendEntry);
+        }
+
         goto _IGNORE;
       }
     }
@@ -269,8 +334,17 @@ int32_t syncNodeOnAppendEntries(SSyncNode* ths, const SRpcMsg* pRpcMsg) {
     // update match index
     pReply->matchIndex = pAppendEntry->index;
 
-    syncEntryDestory(pLocalEntry);
-    syncEntryDestory(pAppendEntry);
+    if (hLocal) {
+      taosLRUCacheRelease(ths->pLogStore->pCache, hLocal, false);
+    } else {
+      syncEntryDestory(pLocalEntry);
+    }
+
+    if (hAppend) {
+      taosLRUCacheRelease(ths->pLogStore->pCache, hAppend, false);
+    } else {
+      syncEntryDestory(pAppendEntry);
+    }
 
   } else {
     // no append entries, do nothing

source/libs/sync/src/syncCommit.c

@@ -116,7 +116,12 @@ void syncMaybeAdvanceCommitIndex(SSyncNode* pSyncNode) {
       LRUHandle*      h = taosLRUCacheLookup(pCache, &index, sizeof(index));
       if (h) {
         pEntry = (SSyncRaftEntry*)taosLRUCacheValue(pCache, h);
+
+        sNTrace(pSyncNode, "hit cache index:%" PRId64 ", bytes:%u, %p", index, pEntry->bytes, pEntry);
+
       } else {
+        sNTrace(pSyncNode, "miss cache index:%" PRId64, index);
+
         int32_t code = pSyncNode->pLogStore->syncLogGetEntry(pSyncNode->pLogStore, index, &pEntry);
         if (code != 0) {
           sNError(pSyncNode, "advance commit index error, read wal index:%" PRId64, index);

source/libs/sync/src/syncMain.c

@@ -383,15 +383,33 @@ bool syncIsReadyForRead(int64_t rid) {
 
     } else {
       if (!pSyncNode->pLogStore->syncLogIsEmpty(pSyncNode->pLogStore)) {
+        SyncIndex       lastIndex = pSyncNode->pLogStore->syncLogLastIndex(pSyncNode->pLogStore);
         SSyncRaftEntry* pEntry = NULL;
-        int32_t         code = pSyncNode->pLogStore->syncLogGetEntry(
-            pSyncNode->pLogStore, pSyncNode->pLogStore->syncLogLastIndex(pSyncNode->pLogStore), &pEntry);
+        SLRUCache*      pCache = pSyncNode->pLogStore->pCache;
+        LRUHandle*      h = taosLRUCacheLookup(pCache, &lastIndex, sizeof(lastIndex));
+        int32_t         code = 0;
+        if (h) {
+          pEntry = (SSyncRaftEntry*)taosLRUCacheValue(pCache, h);
+          code = 0;
+
+          sNTrace(pSyncNode, "hit cache index:%" PRId64 ", bytes:%u, %p", lastIndex, pEntry->bytes, pEntry);
+
+        } else {
+          sNTrace(pSyncNode, "miss cache index:%" PRId64, lastIndex);
+
+          code = pSyncNode->pLogStore->syncLogGetEntry(pSyncNode->pLogStore, lastIndex, &pEntry);
+        }
+
         if (code == 0 && pEntry != NULL) {
           if (pEntry->originalRpcType == TDMT_SYNC_NOOP && pEntry->term == pSyncNode->pRaftStore->currentTerm) {
             ready = true;
           }
 
-          syncEntryDestory(pEntry);
+          if (h) {
+            taosLRUCacheRelease(pCache, h, false);
+          } else {
+            syncEntryDestory(pEntry);
+          }
         }
       }
     }
@@ -1761,10 +1779,24 @@ SyncTerm syncNodeGetPreTerm(SSyncNode* pSyncNode, SyncIndex index) {
     return 0;
   }
 
-  SyncTerm        preTerm = 0;
-  SyncIndex       preIndex = index - 1;
+  SyncTerm  preTerm = 0;
+  SyncIndex preIndex = index - 1;
+
   SSyncRaftEntry* pPreEntry = NULL;
-  int32_t         code = pSyncNode->pLogStore->syncLogGetEntry(pSyncNode->pLogStore, preIndex, &pPreEntry);
+  SLRUCache*      pCache = pSyncNode->pLogStore->pCache;
+  LRUHandle*      h = taosLRUCacheLookup(pCache, &preIndex, sizeof(preIndex));
+  int32_t         code = 0;
+  if (h) {
+    pPreEntry = (SSyncRaftEntry*)taosLRUCacheValue(pCache, h);
+    code = 0;
+
+    sNTrace(pSyncNode, "hit cache index:%" PRId64 ", bytes:%u, %p", preIndex, pPreEntry->bytes, pPreEntry);
+
+  } else {
+    sNTrace(pSyncNode, "miss cache index:%" PRId64, preIndex);
+
+    code = pSyncNode->pLogStore->syncLogGetEntry(pSyncNode->pLogStore, preIndex, &pPreEntry);
+  }
 
   SSnapshot snapshot = {.data = NULL,
                         .lastApplyIndex = SYNC_INDEX_INVALID,
@@ -1774,7 +1806,13 @@ SyncTerm syncNodeGetPreTerm(SSyncNode* pSyncNode, SyncIndex index) {
   if (code == 0) {
     ASSERT(pPreEntry != NULL);
     preTerm = pPreEntry->term;
-    taosMemoryFree(pPreEntry);
+
+    if (h) {
+      taosLRUCacheRelease(pCache, h, false);
+    } else {
+      syncEntryDestory(pPreEntry);
+    }
+
     return preTerm;
   } else {
     if (pSyncNode->pFsm->FpGetSnapshotInfo != NULL) {
@@ -1820,9 +1858,6 @@ static void syncNodeEqPingTimer(void* param, void* tmrId) {
     }
 
     taosTmrReset(syncNodeEqPingTimer, pNode->pingTimerMS, pNode, syncEnv()->pTimerManager, &pNode->pPingTimer);
-  } else {
-    sTrace("==syncNodeEqPingTimer== pingTimerLogicClock:%" PRId64 ", pingTimerLogicClockUser:%" PRId64,
-           pNode->pingTimerLogicClock, pNode->pingTimerLogicClockUser);
   }
 }
 
@@ -1856,16 +1891,6 @@ static void syncNodeEqElectTimer(void* param, void* tmrId) {
   }
 
   taosMemoryFree(pElectTimer);
-
-#if 0
-  // reset timer ms
-  if (syncIsInit() && pNode->electBaseLine > 0) {
-    pNode->electTimerMS = syncUtilElectRandomMS(pNode->electBaseLine, 2 * pNode->electBaseLine);
-    taosTmrReset(syncNodeEqElectTimer, pNode->electTimerMS, pNode, syncEnv()->pTimerManager, &pNode->pElectTimer);
-  } else {
-    sError("sync env is stop, syncNodeEqElectTimer");
-  }
-#endif
 }
 
 static void syncNodeEqHeartbeatTimer(void* param, void* tmrId) {
@@ -1979,7 +2004,10 @@ static int32_t syncNodeEqNoop(SSyncNode* pNode) {
 
 static void deleteCacheEntry(const void* key, size_t keyLen, void* value) { taosMemoryFree(value); }
 
-static int32_t syncCacheEntry(SSyncLogStore* pLogStore, SSyncRaftEntry* pEntry, LRUHandle** h) {
+int32_t syncCacheEntry(SSyncLogStore* pLogStore, SSyncRaftEntry* pEntry, LRUHandle** h) {
+  SSyncLogStoreData* pData = pLogStore->data;
+  sNTrace(pData->pSyncNode, "in cache index:%" PRId64 ", bytes:%u, %p", pEntry->index, pEntry->bytes, pEntry);
+
   int32_t   code = 0;
   int32_t   entryLen = sizeof(*pEntry) + pEntry->dataLen;
   LRUStatus status = taosLRUCacheInsert(pLogStore->pCache, &pEntry->index, sizeof(pEntry->index), pEntry, entryLen,
@@ -2000,7 +2028,6 @@ static int32_t syncNodeAppendNoop(SSyncNode* ths) {
   ASSERT(pEntry != NULL);
 
   LRUHandle* h = NULL;
-  syncCacheEntry(ths->pLogStore, pEntry, &h);
 
   if (ths->state == TAOS_SYNC_STATE_LEADER) {
     int32_t code = ths->pLogStore->syncLogAppendEntry(ths->pLogStore, pEntry);
@@ -2008,6 +2035,8 @@ static int32_t syncNodeAppendNoop(SSyncNode* ths) {
       sError("append noop error");
       return -1;
     }
+
+    syncCacheEntry(ths->pLogStore, pEntry, &h);
   }
 
   if (h) {
@@ -2143,7 +2172,6 @@ int32_t syncNodeOnClientRequest(SSyncNode* ths, SRpcMsg* pMsg, SyncIndex* pRetIn
   }
 
   LRUHandle* h = NULL;
-  syncCacheEntry(ths->pLogStore, pEntry, &h);
 
   if (ths->state == TAOS_SYNC_STATE_LEADER) {
     // append entry
@@ -2183,6 +2211,8 @@ int32_t syncNodeOnClientRequest(SSyncNode* ths, SRpcMsg* pMsg, SyncIndex* pRetIn
       }
     }
 
+    syncCacheEntry(ths->pLogStore, pEntry, &h);
+
     // if mulit replica, start replicate right now
     if (ths->replicaNum > 1) {
       syncNodeReplicate(ths);
@@ -2349,7 +2379,12 @@ int32_t syncNodeDoCommit(SSyncNode* ths, SyncIndex beginIndex, SyncIndex endInde
         LRUHandle*      h = taosLRUCacheLookup(pCache, &i, sizeof(i));
         if (h) {
           pEntry = (SSyncRaftEntry*)taosLRUCacheValue(pCache, h);
+
+          sNTrace(ths, "hit cache index:%" PRId64 ", bytes:%u, %p", i, pEntry->bytes, pEntry);
+
         } else {
+          sNTrace(ths, "miss cache index:%" PRId64, i);
+
           code = ths->pLogStore->syncLogGetEntry(ths->pLogStore, i, &pEntry);
           // ASSERT(code == 0);
           // ASSERT(pEntry != NULL);

source/libs/sync/src/syncRaftEntry.c

@@ -92,6 +92,8 @@ SSyncRaftEntry* syncEntryBuildNoop(SyncTerm term, SyncIndex index, int32_t vgId)
 void syncEntryDestory(SSyncRaftEntry* pEntry) {
   if (pEntry != NULL) {
     taosMemoryFree(pEntry);
+
+    sTrace("free entry: %p", pEntry);
   }
 }
 

source/libs/sync/src/syncRaftLog.c

@@ -37,7 +37,8 @@ SSyncLogStore* logStoreCreate(SSyncNode* pSyncNode) {
     return NULL;
   }
 
-  pLogStore->pCache = taosLRUCacheInit(10 * 1024 * 1024, 1, .5);
+  // pLogStore->pCache = taosLRUCacheInit(10 * 1024 * 1024, 1, .5);
+  pLogStore->pCache = taosLRUCacheInit(100 * 1024 * 1024, 1, .5);
   if (pLogStore->pCache == NULL) {
     taosMemoryFree(pLogStore);
     terrno = TSDB_CODE_WAL_OUT_OF_MEMORY;
@@ -321,6 +322,17 @@ static int32_t raftLogTruncate(struct SSyncLogStore* pLogStore, SyncIndex fromIn
     return 0;
   }
 
+  // delete from cache
+  for (SyncIndex index = fromIndex; index <= wallastVer; ++index) {
+    SLRUCache* pCache = pData->pSyncNode->pLogStore->pCache;
+    LRUHandle* h = taosLRUCacheLookup(pCache, &index, sizeof(index));
+    if (h) {
+      sNTrace(pData->pSyncNode, "cache delete index:%" PRId64, index);
+
+      taosLRUCacheRelease(pData->pSyncNode->pLogStore->pCache, h, true);
+    }
+  }
+
   int32_t code = walRollback(pWal, fromIndex);
   if (code != 0) {
     int32_t     err = terrno;

source/libs/sync/src/syncReplication.c

@@ -73,7 +73,20 @@ int32_t syncNodeReplicateOne(SSyncNode* pSyncNode, SRaftId* pDestId, bool snapsh
   SyncAppendEntries* pMsg = NULL;
 
   SSyncRaftEntry* pEntry = NULL;
-  int32_t         code = pSyncNode->pLogStore->syncLogGetEntry(pSyncNode->pLogStore, nextIndex, &pEntry);
+  SLRUCache*      pCache = pSyncNode->pLogStore->pCache;
+  LRUHandle*      h = taosLRUCacheLookup(pCache, &nextIndex, sizeof(nextIndex));
+  int32_t         code = 0;
+  if (h) {
+    pEntry = (SSyncRaftEntry*)taosLRUCacheValue(pCache, h);
+    code = 0;
+
+    sNTrace(pSyncNode, "hit cache index:%" PRId64 ", bytes:%u, %p", nextIndex, pEntry->bytes, pEntry);
+
+  } else {
+    sNTrace(pSyncNode, "miss cache index:%" PRId64, nextIndex);
+
+    code = pSyncNode->pLogStore->syncLogGetEntry(pSyncNode->pLogStore, nextIndex, &pEntry);
+  }
 
   if (code == 0) {
     ASSERT(pEntry != NULL);
@@ -99,7 +112,11 @@ int32_t syncNodeReplicateOne(SSyncNode* pSyncNode, SRaftId* pDestId, bool snapsh
     }
   }
 
-  syncEntryDestory(pEntry);
+  if (h) {
+    taosLRUCacheRelease(pCache, h, false);
+  } else {
+    syncEntryDestory(pEntry);
+  }
 
   // prepare msg
   ASSERT(pMsg != NULL);

source/libs/sync/src/syncUtil.c

@@ -212,7 +212,11 @@ void syncPrintNodeLog(const char* flags, ELogLevel level, int32_t dflag, SSyncNo
   }
 
   char cfgStr[1024];
-  syncCfg2SimpleStr(&(pNode->pRaftCfg->cfg), cfgStr, sizeof(cfgStr));
+  if (pNode->pRaftCfg != NULL) {
+    syncCfg2SimpleStr(&(pNode->pRaftCfg->cfg), cfgStr, sizeof(cfgStr));
+  } else {
+    return;
+  }
 
   char peerStr[1024] = "{";
   syncPeerState2Str(pNode, peerStr, sizeof(peerStr));
@@ -230,17 +234,19 @@ void syncPrintNodeLog(const char* flags, ELogLevel level, int32_t dflag, SSyncNo
   // restore error code
   terrno = errCode;
 
-  taosPrintLog(flags, level, dflag,
-               "vgId:%d, sync %s "
-               "%s"
-               ", tm:%" PRIu64 ", cmt:%" PRId64 ", fst:%" PRId64 ", lst:%" PRId64 ", min:%" PRId64 ", snap:%" PRId64
-               ", snap-tm:%" PRIu64 ", sby:%d, aq:%d, bch:%d, r-num:%d, lcfg:%" PRId64
-               ", chging:%d, rsto:%d, dquorum:%d, elt:%" PRId64 ", hb:%" PRId64 ", %s, %s",
-               pNode->vgId, syncStr(pNode->state), eventLog, currentTerm, pNode->commitIndex, logBeginIndex,
-               logLastIndex, pNode->minMatchIndex, snapshot.lastApplyIndex, snapshot.lastApplyTerm,
-               pNode->pRaftCfg->isStandBy, aqItems, pNode->pRaftCfg->batchSize, pNode->replicaNum,
-               pNode->pRaftCfg->lastConfigIndex, pNode->changing, pNode->restoreFinish, quorum,
-               pNode->electTimerLogicClock, pNode->heartbeatTimerLogicClockUser, peerStr, cfgStr);
+  if (pNode != NULL && pNode->pRaftCfg != NULL) {
+    taosPrintLog(flags, level, dflag,
+                 "vgId:%d, sync %s "
+                 "%s"
+                 ", tm:%" PRIu64 ", cmt:%" PRId64 ", fst:%" PRId64 ", lst:%" PRId64 ", min:%" PRId64 ", snap:%" PRId64
+                 ", snap-tm:%" PRIu64 ", sby:%d, aq:%d, bch:%d, r-num:%d, lcfg:%" PRId64
+                 ", chging:%d, rsto:%d, dquorum:%d, elt:%" PRId64 ", hb:%" PRId64 ", %s, %s",
+                 pNode->vgId, syncStr(pNode->state), eventLog, currentTerm, pNode->commitIndex, logBeginIndex,
+                 logLastIndex, pNode->minMatchIndex, snapshot.lastApplyIndex, snapshot.lastApplyTerm,
+                 pNode->pRaftCfg->isStandBy, aqItems, pNode->pRaftCfg->batchSize, pNode->replicaNum,
+                 pNode->pRaftCfg->lastConfigIndex, pNode->changing, pNode->restoreFinish, quorum,
+                 pNode->electTimerLogicClock, pNode->heartbeatTimerLogicClockUser, peerStr, cfgStr);
+  }
 }
 
 void syncPrintSnapshotSenderLog(const char* flags, ELogLevel level, int32_t dflag, SSyncSnapshotSender* pSender,
@@ -364,9 +370,9 @@ void syncLogSendAppendEntriesReply(SSyncNode* pSyncNode, const SyncAppendEntries
   syncUtilU642Addr(pMsg->destId.addr, host, sizeof(host), &port);
 
   sNTrace(pSyncNode,
-          "send sync-append-entries-reply to %s:%d, {term:%" PRId64 ", pterm:%" PRId64 ", success:%d, match:%" PRId64
-          "}, %s",
-          host, port, pMsg->term, pMsg->privateTerm, pMsg->success, pMsg->matchIndex, s);
+          "send sync-append-entries-reply to %s:%d, {term:%" PRId64 ", pterm:%" PRId64
+          ", success:%d, lsend-index:%" PRId64 ", match:%" PRId64 "}, %s",
+          host, port, pMsg->term, pMsg->privateTerm, pMsg->success, pMsg->lastSendIndex, pMsg->matchIndex, s);
 }
 
 void syncLogRecvAppendEntriesReply(SSyncNode* pSyncNode, const SyncAppendEntriesReply* pMsg, const char* s) {