Saurabh Sethia saurabhs13

## utf8-ranges.md

      
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              September 20, 2025 18:24
            
          
Unicode Range
Bit Count
Byte Sequence


U+0000 → U+007F
7
0xxxxxxx


U+0080 → U+07FF
11
110xxxxx 10xxxxxx


U+0800 → U+FFFF
16
1110xxxx 10xxxxxx 10xxxxxx


U+10000 → U+10FFFF
21
11110xxx 10xxxxxx 10xxxxxx 10xxxxxx


Here, x bits are the actual Unicode code point bits.


## wal-file-structure.md

      
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              September 24, 2025 15:04
            
          
    WAL File Structure (Simplified)


Field
Description


LSN (Log Sequence Number)
Unique ID for the record, defines ordering.


CRC (Cyclic Redundancy Check)
Used to detect corruption in the record.


Operation Data
Actual change (e.g., INSERT, UPDATE, DELETE).


Previous Record LSN
Pointer to the last WAL record, forming a chain.
Unicode Range	Bit Count	Byte Sequence
U+0000 → U+007F	7	`0xxxxxxx`
U+0080 → U+07FF	11	`110xxxxx 10xxxxxx`
U+0800 → U+FFFF	16	`1110xxxx 10xxxxxx 10xxxxxx`
U+10000 → U+10FFFF	21	`11110xxx 10xxxxxx 10xxxxxx 10xxxxxx`
Field	Description
LSN (Log Sequence Number)	Unique ID for the record, defines ordering.
CRC (Cyclic Redundancy Check)	Used to detect corruption in the record.
Operation Data	Actual change (e.g., INSERT, UPDATE, DELETE).
Previous Record LSN	Pointer to the last WAL record, forming a chain.