commit ec94215b0a72b222e0dee7314669e6a595aed771 · keays.io/feed-generator-go

+72

notes.md

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       Some notes on how I handled manually cleaning up the database file. This needs to be automated later...

     

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       ```bash

     

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       apk add sqlite

     

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       cd /data

     

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       sqlite3

     

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       .open coffee.db

     

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       ATTACH DATABASE 'archive.db' AS archive;

     

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       .schema post

     

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       CREATE TABLE IF NOT EXISTS archive."post" ("uri" varchar primary key, "cid" varchar not null, "topic" varchar not null, "indexedAt" varchar not null);

     

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       SELECT COUNT(*) FROM post WHERE indexedAt < '2025-06-01T00:00:00Z';

     

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       INSERT INTO archive.post SELECT * FROM post WHERE indexedAt < '2025-06-01T00:00:00Z';

     

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       DETACH DATABASE archive;

     

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       DELETE FROM post WHERE indexedAt < '2025-06-01T00:00:00Z';

     

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       apk add sqlite

     

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       cd /data

     

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       rm archive.db archive.db-journal 

     

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       cp archive.db.bak archive.db

     

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       sqlite3

     

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       .open coffee.db

     

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       ATTACH DATABASE 'archive.db' AS archive;

     

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       INSERT INTO archive.post SELECT * FROM post WHERE indexedAt < '2025-06-15T00:00:00Z';

     

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       DETACH DATABASE archive;

     

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       DELETE FROM post WHERE indexedAt < '2025-06-15T00:00:00Z';

     

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       .exit

     

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       cp archive.db archive.db.bak

     

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       ```

     

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       ```bash

     

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       32876d22b7d238:/data# apk add sqlite

     

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       fetch https://dl-cdn.alpinelinux.org/alpine/v3.21/main/x86_64/APKINDEX.tar.gz

     

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       fetch https://dl-cdn.alpinelinux.org/alpine/v3.21/community/x86_64/APKINDEX.tar.gz

     

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       (1/4) Installing ncurses-terminfo-base (6.5_p20241006-r3)

     

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       (2/4) Installing libncursesw (6.5_p20241006-r3)

     

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       (3/4) Installing readline (8.2.13-r0)

     

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       (4/4) Installing sqlite (3.48.0-r4)

     

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       Executing busybox-1.37.0-r12.trigger

     

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       OK: 10 MiB in 21 packages

     

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       32876d22b7d238:/data# sqlite3

     

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       SQLite version 3.48.0 2025-01-14 11:05:00

     

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       Enter ".help" for usage hints.

     

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       Connected to a transient in-memory database.

     

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       Use ".open FILENAME" to reopen on a persistent database.

     

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       sqlite> .open coffee.db

     

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       sqlite> ATTACH DATABASE 'archive.db' AS archive;

     

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       sqlite> .schema post

     

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       CREATE TABLE IF NOT EXISTS "post" ("uri" varchar primary key, "cid" varchar not null, "topic" varchar not null, "indexedAt" varchar not null);

     

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       sqlite> CREATE TABLE IF NOT EXISTS archive."post" ("uri" varchar primary key, "cid" varchar not null, "topic" varchar not null, "indexedAt" varchar not null);

     

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       sqlite> SELECT COUNT(*) FROM post WHERE indexedAt < '2025-06-01T00:00:00Z';

     

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       35438

     

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       sqlite> INSERT INTO archive.post SELECT * FROM post WHERE indexedAt < '2025-06-01T00:00:00Z';

     

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       sqlite> DETACH DATABASE archive;

     

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       sqlite> .exit

     

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       # because this crashed quite a few times...

     

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       32876d22b7d238:/data# cp archive.db archive.db.bak

     

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       # ... later

     

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       32876d22b7d238:/data# sqlite3

     

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       SQLite version 3.48.0 2025-01-14 11:05:00

     

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       Enter ".help" for usage hints.

     

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       Connected to a transient in-memory database.

     

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       Use ".open FILENAME" to reopen on a persistent database.

     

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       sqlite> .open coffee.db

     

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       sqlite> ATTACH DATABASE 'archive.db' AS archive;

     

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       sqlite> SELECT COUNT(*) FROM post WHERE indexedAt < '2025-06-29T02:43:00Z';

     

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       188598

     

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       sqlite> INSERT INTO archive.post SELECT * FROM post WHERE indexedAt < '2025-06-15T00:00:00Z';

     

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       sqlite> DETACH DATABASE archive;

     

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       sqlite> DELETE FROM post WHERE indexedAt < '2025-06-15T00:00:00Z';

     

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       ```