diff --git a/rocksdb/backup.nim b/rocksdb/backup.nim
index 7c88bc5..e0fb906 100644
--- a/rocksdb/backup.nim
+++ b/rocksdb/backup.nim
@@ -39,7 +39,8 @@ proc openBackupEngine*(
   let backupEnginePtr = rocksdb_backup_engine_open(
     backupOpts.cPtr, path.cstring, cast[cstringArray](errors.addr)
   )
-  bailOnErrors(errors, backupOpts = backupOpts)
+
+  bailOnErrorsAutoCloseOpts(errors, backupOpts = backupOpts)
 
   let engine =
     BackupEngineRef(cPtr: backupEnginePtr, path: path, backupOpts: backupOpts)
diff --git a/rocksdb/columnfamily/cfopts.nim b/rocksdb/columnfamily/cfopts.nim
index ae7e237..82304af 100644
--- a/rocksdb/columnfamily/cfopts.nim
+++ b/rocksdb/columnfamily/cfopts.nim
@@ -13,8 +13,10 @@ import ../lib/librocksdb, ../options/tableopts
 
 type
   SlicetransformPtr* = ptr rocksdb_slicetransform_t
+
   SlicetransformRef* = ref object
     cPtr: SlicetransformPtr
+    autoClose*: bool # if true then close will be called when the parent is closed
 
   ColFamilyOptionsPtr* = ptr rocksdb_options_t
 
@@ -23,6 +25,8 @@ type
     # type - CF options are a subset of rocksdb_options_t - when in doubt, check:
     # https://github.com/facebook/rocksdb/blob/b8c9a2576af6a1d0ffcfbb517dfcb7e7037bd460/include/rocksdb/options.h#L66
     cPtr: ColFamilyOptionsPtr
+    sliceTransform: SlicetransformRef
+    tableOpts: TableOptionsRef
     autoClose*: bool # if true then close will be called when the database is closed
 
   Compression* {.pure.} = enum
@@ -36,8 +40,11 @@ type
     xpressCompression = rocksdb_xpress_compression
     zstdCompression = rocksdb_zstd_compression
 
-proc createFixedPrefix*(value: int): SlicetransformRef =
-  SlicetransformRef(cPtr: rocksdb_slicetransform_create_fixed_prefix(value.csize_t))
+proc createFixedPrefix*(value: int, autoClose = false): SlicetransformRef =
+  SlicetransformRef(
+    cPtr: rocksdb_slicetransform_create_fixed_prefix(value.csize_t),
+    autoClose: autoClose,
+  )
 
 proc isClosed*(s: SlicetransformRef): bool {.inline.} =
   s.cPtr.isNil()
@@ -66,6 +73,11 @@ proc close*(cfOpts: ColFamilyOptionsRef) =
     rocksdb_options_destroy(cfOpts.cPtr)
     cfOpts.cPtr = nil
 
+    if not cfOpts.sliceTransform.isNil() and cfOpts.sliceTransform.autoClose:
+      cfOpts.sliceTransform.close()
+    if not cfOpts.tableOpts.isNil() and cfOpts.tableOpts.autoClose:
+      cfOpts.tableOpts.close()
+
 template opt(nname, ntyp, ctyp: untyped) =
   proc `nname=`*(cfOpts: ColFamilyOptionsRef, value: ntyp) =
     doAssert not cfOpts.isClosed
@@ -125,13 +137,21 @@ proc defaultColFamilyOptions*(autoClose = false): ColFamilyOptionsRef =
 
 proc `setPrefixExtractor`*(cfOpts: ColFamilyOptionsRef, value: SlicetransformRef) =
   doAssert not cfOpts.isClosed()
+  doAssert cfOpts.sliceTransform.isNil()
+    # don't allow overwriting an existing sliceTransform which could leak memory
+
   rocksdb_options_set_prefix_extractor(cfOpts.cPtr, value.cPtr)
+  cfOpts.sliceTransform = value
 
 proc `blockBasedTableFactory=`*(
     cfOpts: ColFamilyOptionsRef, tableOpts: TableOptionsRef
 ) =
   doAssert not cfOpts.isClosed()
+  doAssert cfOpts.tableOpts.isNil()
+    # don't allow overwriting an existing tableOpts which could leak memory
+
   rocksdb_options_set_block_based_table_factory(cfOpts.cPtr, tableOpts.cPtr)
+  cfOpts.tableOpts = tableOpts
 
 # https://github.com/facebook/rocksdb/wiki/MemTable
 proc setHashSkipListRep*(
diff --git a/rocksdb/internal/utils.nim b/rocksdb/internal/utils.nim
index 2de5923..2e0896f 100644
--- a/rocksdb/internal/utils.nim
+++ b/rocksdb/internal/utils.nim
@@ -25,7 +25,7 @@ template autoCloseNonNil*(opts: typed) =
   if not opts.isNil and opts.autoClose:
     opts.close()
 
-template bailOnErrors*(
+template bailOnErrorsAutoCloseOpts*(
     errors: cstring,
     dbOpts: DbOptionsRef = nil,
     readOpts: ReadOptionsRef = nil,
@@ -48,3 +48,9 @@ template bailOnErrors*(
     let res = err($(errors))
     rocksdb_free(errors)
     return res
+
+template bailOnErrors*(errors: cstring): auto =
+  if not errors.isNil:
+    let res = err($(errors))
+    rocksdb_free(errors)
+    return res
diff --git a/rocksdb/options/cache.nim b/rocksdb/options/cache.nim
index 9d53b3a..637084b 100644
--- a/rocksdb/options/cache.nim
+++ b/rocksdb/options/cache.nim
@@ -5,9 +5,10 @@ type
 
   CacheRef* = ref object
     cPtr*: CachePtr
+    autoClose*: bool # if true then close will be called when the parent type is closed
 
-proc cacheCreateLRU*(size: int): CacheRef =
-  CacheRef(cPtr: rocksdb_cache_create_lru(size.csize_t))
+proc cacheCreateLRU*(size: int, autoClose = false): CacheRef =
+  CacheRef(cPtr: rocksdb_cache_create_lru(size.csize_t), autoClose: autoClose)
 
 proc close*(cache: CacheRef) =
   if cache.cPtr != nil:
diff --git a/rocksdb/options/dbopts.nim b/rocksdb/options/dbopts.nim
index e3f9c0f..ec7eb6f 100644
--- a/rocksdb/options/dbopts.nim
+++ b/rocksdb/options/dbopts.nim
@@ -18,6 +18,7 @@ type
 
   DbOptionsRef* = ref object
     cPtr: DbOptionsPtr
+    cache: CacheRef
     autoClose*: bool # if true then close will be called when the database is closed
 
 proc newDbOptions*(autoClose = false): DbOptionsRef =
@@ -94,7 +95,11 @@ opt avoidUnnecessaryBlockingIo, bool, uint8
 
 proc `rowCache=`*(dbOpts: DbOptionsRef, cache: CacheRef) =
   doAssert not dbOpts.isClosed()
+  doAssert dbOpts.cache.isNil()
+    # don't allow overwriting an existing cache which could leak memory
+
   rocksdb_options_set_row_cache(dbOpts.cPtr, cache.cPtr)
+  dbOpts.cache = cache
 
 proc defaultDbOptions*(autoClose = false): DbOptionsRef =
   let opts: DbOptionsRef = newDbOptions(autoClose)
@@ -118,3 +123,6 @@ proc close*(dbOpts: DbOptionsRef) =
   if not dbOpts.isClosed():
     rocksdb_options_destroy(dbOpts.cPtr)
     dbOpts.cPtr = nil
+
+    if not dbOpts.cache.isNil() and dbOpts.cache.autoClose:
+      dbOpts.cache.close()
diff --git a/rocksdb/options/tableopts.nim b/rocksdb/options/tableopts.nim
index e8bdba8..4d1071a 100644
--- a/rocksdb/options/tableopts.nim
+++ b/rocksdb/options/tableopts.nim
@@ -6,11 +6,15 @@ type
 
   TableOptionsRef* = ref object
     cPtr*: TableOptionsPtr
+    cache: CacheRef
+    filterPolicy: FilterPolicyRef
+    autoClose*: bool # if true then close will be called when the parent type is closed
 
   FilterPolicyPtr* = ptr rocksdb_filterpolicy_t
 
   FilterPolicyRef* = ref object
     cPtr*: FilterPolicyPtr
+    autoClose*: bool # if true then close will be called when the parent type is closed
 
   IndexType* {.pure.} = enum
     binarySearch = rocksdb_block_based_table_index_type_binary_search
@@ -22,14 +26,17 @@ type
     binarySearchAndHash =
       rocksdb_block_based_table_data_block_index_type_binary_search_and_hash
 
-proc createRibbon*(bitsPerKey: float): FilterPolicyRef =
-  FilterPolicyRef(cPtr: rocksdb_filterpolicy_create_ribbon(bitsPerKey))
+proc createRibbon*(bitsPerKey: float, autoClose = false): FilterPolicyRef =
+  FilterPolicyRef(
+    cPtr: rocksdb_filterpolicy_create_ribbon(bitsPerKey), autoClose: autoClose
+  )
 
 proc createRibbonHybrid*(
-    bitsPerKey: float, bloomBeforeLevel: int = 0
+    bitsPerKey: float, bloomBeforeLevel: int = 0, autoClose = false
 ): FilterPolicyRef =
   FilterPolicyRef(
-    cPtr: rocksdb_filterpolicy_create_ribbon_hybrid(bitsPerKey, bloomBeforeLevel.cint)
+    cPtr: rocksdb_filterpolicy_create_ribbon_hybrid(bitsPerKey, bloomBeforeLevel.cint),
+    autoClose: autoClose,
   )
 
 proc isClosed*(policy: FilterPolicyRef): bool =
@@ -40,8 +47,8 @@ proc close*(policy: FilterPolicyRef) =
     rocksdb_filterpolicy_destroy(policy.cPtr)
     policy.cPtr = nil
 
-proc createTableOptions*(): TableOptionsRef =
-  TableOptionsRef(cPtr: rocksdb_block_based_options_create())
+proc createTableOptions*(autoClose = false): TableOptionsRef =
+  TableOptionsRef(cPtr: rocksdb_block_based_options_create(), autoClose: autoClose)
 
 proc isClosed*(opts: TableOptionsRef): bool =
   isNil(opts.cPtr)
@@ -51,6 +58,11 @@ proc close*(opts: TableOptionsRef) =
     rocksdb_block_based_options_destroy(opts.cPtr)
     opts.cPtr = nil
 
+    if not opts.cache.isNil() and opts.cache.autoClose:
+      opts.cache.close()
+    if not opts.filterPolicy.isNil() and opts.filterPolicy.autoClose:
+      opts.filterPolicy.close()
+
 template opt(nname, ntyp, ctyp: untyped) =
   proc `nname=`*(opts: TableOptionsRef, value: ntyp) =
     doAssert not opts.isClosed
@@ -76,15 +88,26 @@ opt wholeKeyFiltering, bool, uint8
 opt formatVersion, int, cint
 
 proc `blockCache=`*(opts: TableOptionsRef, cache: CacheRef) =
+  doAssert not opts.isClosed()
+  doAssert opts.cache.isNil()
+    # don't allow overwriting an existing cache which could leak memory
+
   rocksdb_block_based_options_set_block_cache(opts.cPtr, cache.cPtr)
+  opts.cache = cache
 
 proc `filterPolicy=`*(opts: TableOptionsRef, policy: FilterPolicyRef) =
+  doAssert not opts.isClosed()
+  doAssert opts.filterPolicy.isNil()
+    # don't allow overwriting an existing policy which could leak memory
+
   rocksdb_block_based_options_set_filter_policy(opts.cPtr, policy.cPtr)
+  opts.filterPolicy = policy
 
-proc defaultTableOptions*(): TableOptionsRef =
+proc defaultTableOptions*(autoClose = false): TableOptionsRef =
   # https://github.com/facebook/rocksdb/wiki/Setup-Options-and-Basic-Tuning#other-general-options
-  let opts = createTableOptions()
+  let opts = createTableOptions(autoClose)
   opts.blockSize = 16 * 1024
   opts.cacheIndexAndFilterBlocks = true
   opts.pinL0FilterAndIndexBlocksInCache = true
+
   opts
diff --git a/rocksdb/rocksdb.nim b/rocksdb/rocksdb.nim
index a5443d7..9086eab 100644
--- a/rocksdb/rocksdb.nim
+++ b/rocksdb/rocksdb.nim
@@ -77,7 +77,7 @@ proc listColumnFamilies*(path: string): RocksDBResult[seq[string]] =
     cfList = rocksdb_list_column_families(
       dbOpts.cPtr, path.cstring, addr cfLen, cast[cstringArray](errors.addr)
     )
-  bailOnErrors(errors, dbOpts)
+  bailOnErrorsAutoCloseOpts(errors, dbOpts)
 
   if cfList.isNil or cfLen == 0:
     return ok(newSeqOfCap[string](0))
@@ -127,7 +127,7 @@ proc openRocksDb*(
     cfHandles[0].addr,
     cast[cstringArray](errors.addr),
   )
-  bailOnErrors(errors, dbOpts, readOpts, writeOpts, cfDescriptors = cfs)
+  bailOnErrorsAutoCloseOpts(errors, dbOpts, readOpts, writeOpts, cfDescriptors = cfs)
 
   let
     cfTable = newColFamilyTable(cfNames.mapIt($it), cfHandles)
@@ -181,7 +181,7 @@ proc openRocksDbReadOnly*(
     errorIfWalFileExists.uint8,
     cast[cstringArray](errors.addr),
   )
-  bailOnErrors(errors, dbOpts, readOpts, cfDescriptors = cfs)
+  bailOnErrorsAutoCloseOpts(errors, dbOpts, readOpts, cfDescriptors = cfs)
 
   let
     cfTable = newColFamilyTable(cfNames.mapIt($it), cfHandles)
diff --git a/rocksdb/sstfilewriter.nim b/rocksdb/sstfilewriter.nim
index 4160850..5350bd5 100644
--- a/rocksdb/sstfilewriter.nim
+++ b/rocksdb/sstfilewriter.nim
@@ -44,7 +44,7 @@ proc openSstFileWriter*(
   rocksdb_sstfilewriter_open(
     writer.cPtr, filePath.cstring, cast[cstringArray](errors.addr)
   )
-  bailOnErrors(errors, dbOpts)
+  bailOnErrorsAutoCloseOpts(errors, dbOpts)
 
   ok(writer)
 
diff --git a/rocksdb/transactiondb.nim b/rocksdb/transactiondb.nim
index f449781..fb0f0ff 100644
--- a/rocksdb/transactiondb.nim
+++ b/rocksdb/transactiondb.nim
@@ -72,7 +72,7 @@ proc openTransactionDb*(
     cfHandles[0].addr,
     cast[cstringArray](errors.addr),
   )
-  bailOnErrors(errors, dbOpts, txDbOpts = txDbOpts, cfDescriptors = cfs)
+  bailOnErrorsAutoCloseOpts(errors, dbOpts, txDbOpts = txDbOpts, cfDescriptors = cfs)
 
   let
     cfTable = newColFamilyTable(cfNames.mapIt($it), cfHandles)