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  • Elasticsearch 效率優化 (2)

    Jun 4, 2021 · 2 min read · elasticsearch performance  ·
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    在 elasticsearch performance 1([[elasticsearch-enhance-performance-1]]) 中做了第一階段的優化。 這篇再來強化 index 的管理。

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  • Elasticsearch 用戶管理

    Jun 3, 2021 · 1 min read · elasticsearch  ·
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    本來想使用 LDAP 管理登入帳號,但看到 log 顯示目前的 license (Basic license) 不支援 LDAP。

    LDAP needs a license for use

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  • Troubleshoot the eks creating load balancer access denied

    Jun 2, 2021 · 1 min read · cloud aws  ·
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    排除 ingress-nginx 的 Error syncing load balancer: failed to ensure load balancer: error creating load balancer: "AccessDenied: 異常.

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  • Iptables guide

    May 4, 2021 · 3 min read · internet linux  ·
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    iptables 被許多服務廣泛的運用著, 例如 Docker, Kubernetes 都是基於 iptables 來管理網路封包的處理, 所以此篇來研究 iptables 工具, 看看這些服務底層究竟在幹些什麼事.

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  • rds binlog 留存機制

    Apr 16, 2021 · 1 min read · cloud aws database  ·
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    AWS RDS 備份 snapshot/day 間隔過長, 研究抓取 RDS binlog 並留存在 EC2 上

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  • Concept of MySQL transaction

    Mar 17, 2021 · 2 min read · database mysql  ·
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    在處理事務時, 一件事務通常是由多個的 sql 來操作完成. 為了不讓同時執行多件事情造成資料互相干擾, 所以就會採用事務 (transaction) 功能來維護資料的準確性. 但是要注意的是 MYISAM not supports transaction, 所以要使用 transaction 必須採用 InnoDB.

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  • More types structs, slices, and maps.

    Mar 12, 2021 · 2 min read · golang  ·
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    了解 Golang 有哪些進階型態. 官網上的 More types

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  • Basic types in Golang

    Mar 11, 2021 · 2 min read · golang  ·
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    了解 Golang 有哪些資料型態. 官網上的 Basic types 列出了多種的型態.

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  • 帳本技術的演化

    Mar 3, 2021 · 1 min read · finance  ·
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    記帳技術的演化可分為四個階段.

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  • 區塊鏈上的智能合約(smart contract)

    Feb 25, 2021 · 1 min read · blockchain  ·
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    智能合約是 Nick Szabo 在 1990 年代提出用語及概念. 是透過網際網路與他人互動的一種概念與協議

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