diff --git a/docs/content/doc/advanced/config-cheat-sheet.en-us.md b/docs/content/doc/advanced/config-cheat-sheet.en-us.md
index b68e9d26fe16..f56ed34e431e 100644
--- a/docs/content/doc/advanced/config-cheat-sheet.en-us.md
+++ b/docs/content/doc/advanced/config-cheat-sheet.en-us.md
@@ -587,8 +587,8 @@ Two special environment variables are passed to the render command:
 
 ## Migrations (`migrations`)
 
-- `RETRY_MAX_TIMES`: **3**: Retry times on migrations for every http/https request.
-- `RETRY_DELAY`: **3**: Time as seconds to delay before next retry.
+- `MAX_ATTEMPTS`: **3**: Max attempts per http/https request on migrations.
+- `RETRY_BACKOFF`: **3**: Backoff time per http/https request retry (seconds)
 
 ## Other (`other`)
 
diff --git a/docs/content/doc/advanced/config-cheat-sheet.zh-cn.md b/docs/content/doc/advanced/config-cheat-sheet.zh-cn.md
index ba4aa3762293..22e47f810f6d 100644
--- a/docs/content/doc/advanced/config-cheat-sheet.zh-cn.md
+++ b/docs/content/doc/advanced/config-cheat-sheet.zh-cn.md
@@ -274,8 +274,8 @@ IS_INPUT_FILE = false
 
 ## Migrations (`migrations`)
 
-- `RETRY_MAX_TIMES`: **3**: 在迁移过程中的 http/https 请求重试次数。
-- `RETRY_DELAY`: **3**: 等待下一次重试的时间，单位秒。
+- `MAX_ATTEMPTS`: **3**: 在迁移过程中的 http/https 请求重试次数。
+- `RETRY_BACKOFF`: **3**: 等待下一次重试的时间，单位秒。
 
 ## Other (`other`)
 
diff --git a/modules/migrations/base/downloader.go b/modules/migrations/base/downloader.go
index 020df9af9b9c..b853ec30209a 100644
--- a/modules/migrations/base/downloader.go
+++ b/modules/migrations/base/downloader.go
@@ -46,6 +46,7 @@ func NewRetryDownloader(downloader Downloader, retryTimes, retryDelay int) *Retr
 	}
 }
 
+// GetRepoInfo returns a repository information with retry
 func (d *RetryDownloader) GetRepoInfo() (*Repository, error) {
 	var (
 		times = d.RetryTimes
@@ -61,6 +62,7 @@ func (d *RetryDownloader) GetRepoInfo() (*Repository, error) {
 	return nil, err
 }
 
+// GetTopics returns a repository's topics with retry
 func (d *RetryDownloader) GetTopics() ([]string, error) {
 	var (
 		times  = d.RetryTimes
@@ -76,6 +78,7 @@ func (d *RetryDownloader) GetTopics() ([]string, error) {
 	return nil, err
 }
 
+// GetMilestones returns a repository's milestones with retry
 func (d *RetryDownloader) GetMilestones() ([]*Milestone, error) {
 	var (
 		times      = d.RetryTimes
@@ -91,6 +94,7 @@ func (d *RetryDownloader) GetMilestones() ([]*Milestone, error) {
 	return nil, err
 }
 
+// GetReleases returns a repository's releases with retry
 func (d *RetryDownloader) GetReleases() ([]*Release, error) {
 	var (
 		times    = d.RetryTimes
@@ -106,6 +110,7 @@ func (d *RetryDownloader) GetReleases() ([]*Release, error) {
 	return nil, err
 }
 
+// GetLabels returns a repository's labels with retry
 func (d *RetryDownloader) GetLabels() ([]*Label, error) {
 	var (
 		times  = d.RetryTimes
@@ -121,6 +126,7 @@ func (d *RetryDownloader) GetLabels() ([]*Label, error) {
 	return nil, err
 }
 
+// GetIssues returns a repository's issues with retry
 func (d *RetryDownloader) GetIssues(page, perPage int) ([]*Issue, bool, error) {
 	var (
 		times  = d.RetryTimes
@@ -137,6 +143,7 @@ func (d *RetryDownloader) GetIssues(page, perPage int) ([]*Issue, bool, error) {
 	return nil, false, err
 }
 
+// GetComments returns a repository's comments with retry
 func (d *RetryDownloader) GetComments(issueNumber int64) ([]*Comment, error) {
 	var (
 		times    = d.RetryTimes
@@ -152,6 +159,7 @@ func (d *RetryDownloader) GetComments(issueNumber int64) ([]*Comment, error) {
 	return nil, err
 }
 
+// GetPullRequests returns a repository's pull requests with retry
 func (d *RetryDownloader) GetPullRequests(page, perPage int) ([]*PullRequest, error) {
 	var (
 		times = d.RetryTimes