diff --git a/README.md b/README.md
index 10aed7ef..13802177 100644
--- a/README.md
+++ b/README.md
@@ -126,7 +126,10 @@ use {
   completion_mode = 'inline',
   ---@class LogOptions
   log = {
+    -- Log level.
     level = vim.log.levels.WARN,
+    -- Max log file size in MB, default is 10MB
+    max_size = 10,
   },
 }
 ```
diff --git a/lua/fittencode/config.lua b/lua/fittencode/config.lua
index 8e7355d2..34e9fadb 100644
--- a/lua/fittencode/config.lua
+++ b/lua/fittencode/config.lua
@@ -1,7 +1,7 @@
 local M = {}
 
 ---@class FittenCodeOptions
-M.options = {
+local defaults = {
   -- Same options as `fittentech.fitten-code` in vscode
   action = {
     document_code = {
@@ -78,7 +78,7 @@ M.options = {
     -- Rest backend to use. Available options:
     -- * 'curl'
     -- * 'libcurl'
-    -- * 'node'
+    -- * 'libuv'
     backend = 'curl',
   },
   syntax_highlighting = {
@@ -87,7 +87,14 @@ M.options = {
   },
   ---@class LogOptions
   log = {
+    -- Log level.
     level = vim.log.levels.WARN,
+    -- Max log file size in MB, default is 10MB
+    max_size = 10,
+    -- Create new log file on startup, for debugging purposes.
+    new_file_on_startup = false,
+    -- TODO: Aynchronous logging.
+    async = true,
   },
 }
 
@@ -100,7 +107,7 @@ M.internal = {
 
 ---@param opts? FittenCodeOptions
 function M.setup(opts)
-  M.options = vim.tbl_deep_extend('force', M.options, opts or {})
+  M.options = vim.tbl_deep_extend('force', defaults, opts or {})
 end
 
 return M
diff --git a/lua/fittencode/fs/init.lua b/lua/fittencode/fs/init.lua
index a7d50cb0..ea041dab 100644
--- a/lua/fittencode/fs/init.lua
+++ b/lua/fittencode/fs/init.lua
@@ -261,4 +261,22 @@ function M.delete(path, on_success, on_error)
   end)
 end
 
+function M.stat(path, on_success, on_error)
+  Promise:new(function(resolve, reject)
+    uv.fs_stat(
+      path,
+      function(err, stat)
+        if err then
+          reject(err)
+        else
+          resolve(stat)
+        end
+      end)
+  end):forward(function(stat)
+    schedule(on_success, stat)
+  end, function(err)
+    schedule(on_error, uv_err(err))
+  end)
+end
+
 return M
diff --git a/lua/fittencode/log.lua b/lua/fittencode/log.lua
index 35e6af09..ec2900d3 100644
--- a/lua/fittencode/log.lua
+++ b/lua/fittencode/log.lua
@@ -116,9 +116,16 @@ local function do_log(level, msg)
   log_file(msg)
 end
 
+local function size_over_limit()
+  local size = fn.getfsize(LOG_PATH)
+  return size > Config.options.log.max_size * 1024 * 1024
+end
+
 function M.setup()
-  local LOG_HOME = fn.fnamemodify(LOG_PATH, ':h')
-  fn.mkdir(LOG_HOME, 'p')
+  fn.mkdir(fn.fnamemodify(LOG_PATH, ':h'), 'p')
+  if Config.options.log.new_file_on_startup or size_over_limit() then
+    fn.delete(LOG_PATH)
+  end
 end
 
 ---@param level integer @one of the `vim.log.levels` values
diff --git a/lua/fittencode/rest/manager.lua b/lua/fittencode/rest/manager.lua
index 1da2eecc..04f779a4 100644
--- a/lua/fittencode/rest/manager.lua
+++ b/lua/fittencode/rest/manager.lua
@@ -12,8 +12,8 @@ local builtin_backends = {
   ['libcurl'] = function()
     return require('fittencode.rest.backend.libcurl'):new()
   end,
-  ['node'] = function()
-    return require('fittencode.rest.backend.node'):new()
+  ['libuv'] = function()
+    return require('fittencode.rest.backend.libuv'):new()
   end,
 }