optimistic

楽観的な

よいことが起こると信じ、よい結果を期待している。

やさしい英語で： If you feel this way, you believe that good things will happen.

• I feel optimistic today.
• She is optimistic about finding a job.
• They remained optimistic despite the delay.

使い方： optimistic about something (We are optimistic about the team’s chances.); optimistic that… (He is optimistic that sales will improve.)

類義語： hopeful, positive

反対語： pessimistic

よく使う表現： optimistic about something, remain optimistic, optimistic outlook

楽観的な

複数の処理が共有データを変更でき、保存時に変更の衝突を確認する方式。

やさしい英語で： Allowing several computer tasks to change shared data, then checking for clashes when saving the changes.

• The database uses optimistic locking.
• Optimistic concurrency lets users edit data at the same time.
• An optimistic transaction may fail if another user changes the data.

反対語： pessimistic

よく使う表現： optimistic locking, optimistic concurrency, optimistic transaction