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Postgres performance improvement

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This commit is contained in:
TwinProduction 2021-09-11 17:49:31 -04:00
parent f3822a949d
commit cbfdc359d3
1 changed files with 20 additions and 31 deletions
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43
storage/store/sql/sql.go
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@ -215,7 +215,6 @@ func (s *Store) Insert(service *core.Service, result *core.Result) error {
if err != nil {
return err
}
//start := time.Now()
serviceID, err := s.getServiceID(tx, service)
if err != nil {
if err == common.ErrServiceNotFound {
@ -320,7 +319,6 @@ func (s *Store) Insert(service *core.Service, result *core.Result) error {
}
}
}
//log.Printf("[sql][Insert] Successfully inserted result in duration=%dms", time.Since(start).Milliseconds())
if err = tx.Commit(); err != nil {
_ = tx.Rollback()
}
@ -558,16 +556,6 @@ func (s *Store) getResultsByServiceID(tx *sql.Tx, serviceID int64, page, pageSiz
ORDER BY service_result_id DESC -- Normally, we'd sort by timestamp, but sorting by service_result_id is faster
LIMIT $2 OFFSET $3
`,
//`
// SELECT * FROM (
// SELECT service_result_id, success, errors, connected, status, dns_rcode, certificate_expiration, hostname, ip, duration, timestamp
// FROM service_result
// WHERE service_id = $1
// ORDER BY service_result_id DESC -- Normally, we'd sort by timestamp, but sorting by service_result_id is faster
// LIMIT $2 OFFSET $3
// )
// ORDER BY service_result_id ASC -- Normally, we'd sort by timestamp, but sorting by service_result_id is faster
//`,
serviceID,
pageSize,
(page-1)*pageSize,
@ -584,33 +572,34 @@ func (s *Store) getResultsByServiceID(tx *sql.Tx, serviceID int64, page, pageSiz
if len(joinedErrors) != 0 {
result.Errors = strings.Split(joinedErrors, arraySeparator)
}
//results = append(results, result)
// This is faster than using a subselect
results = append([]*core.Result{result}, results...)
idResultMap[id] = result
}
_ = rows.Close()
// Get the conditionResults
for serviceResultID, result := range idResultMap {
rows, err = tx.Query(
`
SELECT condition, success
// Get condition results
args := make([]interface{}, 0, len(idResultMap))
query := `SELECT service_result_id, condition, success
FROM service_result_condition
WHERE service_result_id = $1
`,
serviceResultID,
)
WHERE service_result_id IN (`
index := 1
for serviceResultID := range idResultMap {
query += fmt.Sprintf("$%d,", index)
args = append(args, serviceResultID)
index++
}
query = query[:len(query)-1] + ")"
rows, err = tx.Query(query, args...)
if err != nil {
return
return nil, err
}
for rows.Next() {
conditionResult := &core.ConditionResult{}
if err = rows.Scan(&conditionResult.Condition, &conditionResult.Success); err != nil {
var serviceResultID int64
if err = rows.Scan(&serviceResultID, &conditionResult.Condition, &conditionResult.Success); err != nil {
return
}
result.ConditionResults = append(result.ConditionResults, conditionResult)
}
_ = rows.Close()
idResultMap[serviceResultID].ConditionResults = append(idResultMap[serviceResultID].ConditionResults, conditionResult)
}
return
}