#PostGIS 2023 PostGIS в действии Авторы: Регина Обе, Лео Хсу PostGIS – расширение PostgreSQL с открытым исходным кодом для работы с пространственными базами данных. Оно предоставляет мощные механизмы для решения практически любых задач, связанных с геоданными. Эта книга призвана послужить путеводителем по сотням функций, предлагаемых PostGIS. Начав с изучения геоинформационных систем, основанных на векторных, рас…

Channel
Программирование | книги
@it_boooks
On this record: Topic · Growth · Engagement · What this channel posts · Stars · Advertising · Posts · Posts edited after publishing · Citations · Telegram's recommendations · Cite this entry
47,460subscribers
+38 since we began measuring on 6 August 2026
Risers and fallers across the register · movement among entries of 31,623–100,000.
Register entry
| Telegram ID | -1001305140758 |
|---|---|
| Type | Channel |
| Username | @it_boooks |
| Description | Для программистов разных областей науки. Навигация по тегам всегда в закрепе. Чат канала: https://t.me/+GBl0ISybbi00NGYy По всем вопросам: @altmainf Регистрация в перечне РКН https://goo.su/PqEImo3 |
| Created | Between 1 March 2018 and 31 July 2021 — estimated from Telegram’s id allocation, not measured. How this range is calculated. |
| First recorded | 6 August 2026 |
| Last confirmed live | 25 September 2026 |
| Measurements held | 33 |
| Confirmed unchanged | 1 time, most recently 25 September 2026 |
| On Telegram | t.me/it_boooks |
Topic
Education — a classification, not a measurement. An on-box language model (Qwen3.6-35B-A3B-UD-Q6_K_XL, prompt version 1) read this channel’s own recent posts on 21 August 2026 and assigned it the closest of 31 fixed categories, at 84% confidence. This is a model’s judgement about what the channel is likely to be about, not a fact this register measured the way a subscriber count or a view count is measured — it can be revised on a later pass, and it carries no weight anywhere else on this page. How this classification works, and why it has no browse page of its own yet.
Growth
| Measured (UTC) | Subscribers | Change |
|---|---|---|
| 25 Sept 2026, 09:02 | 47,460 | +4 |
| 18 Sept 2026, 19:55 | 47,456 | -6 |
| 16 Sept 2026, 10:02 | 47,462 | +8 |
| 14 Sept 2026, 11:58 | 47,454 | +6 |
| 12 Sept 2026, 20:38 | 47,448 | +2 |
| 10 Sept 2026, 22:59 | 47,446 | -2 |
| 7 Sept 2026, 21:57 | 47,448 | +27 |
| 5 Sept 2026, 00:02 | 47,421 | -25 |
| 2 Sept 2026, 01:32 | 47,446 | +5 |
| 31 Aug 2026, 23:34 | 47,441 | +10 |
| 31 Aug 2026, 01:36 | 47,431 | -6 |
| 30 Aug 2026, 02:56 | 47,437 | -18 |
| 29 Aug 2026, 03:23 | 47,455 | +14 |
| 28 Aug 2026, 01:23 | 47,441 | -2 |
| 27 Aug 2026, 03:35 | 47,443 | -3 |
| 26 Aug 2026, 00:46 | 47,446 | +5 |
| 25 Aug 2026, 03:07 | 47,441 | +3 |
| 23 Aug 2026, 21:54 | 47,438 | -8 |
| 20 Aug 2026, 19:28 | 47,446 | +7 |
| 19 Aug 2026, 20:47 | 47,439 | first reading |
Engagement
42 posts held, back to 1 July 2026 — the reader has not yet reached the start of this channel’s public history, so older posts may sit further back, unread. Read across 108 pages of Telegram’s post history, 20 posts per page.
- ERR · 30 days
- 15.6%
- avg views ÷ 47,460 subscribers
- Avg views / post
- 7,410
- 14 posts measured
- Reaction rate
- —
- this channel exposes no reaction counts
- Posts in window
- 14
- of 42 held
ERR is average views per post over the last 30 days divided by subscribers, the definition TGStat uses, so this figure is comparable with the one you will see elsewhere. It falls structurally as a channel grows: a high ERR on a small channel and a low one on a large channel describe reach mathematics, not quality. We publish the figure and the sample it came from and pass no verdict on it.
ER is defined industry-wide as (forwards + reactions + comments) ÷ views — note the denominator is views, not subscribers. Telegram’s public web preview carries views and reactions but not forward or comment counts, so the reaction rate above is the reactions term only and is therefore a floor: the true ER for this channel is higher by an amount we have not measured and will not estimate.
| Window | Rolling 30 days · latest post in window 25 September 2026 |
|---|---|
| Posts held | 42 (1 July 2026 – 25 September 2026) |
| Views total | 103,790 |
| Reactions total | — |
| Forwards / comments | not exposed by the public surface — not measured, not estimated |
| Readings taken | 27 Sept 2026, 06:53 UTC |
Views are a single reading per post, taken at the time above. A post published in the last day or two is still accumulating views, which pulls the 30-day average down slightly. That is a property of the standard definition rather than a fault in it, so we keep the definition rather than “correcting” the number into something nobody can reproduce.
Precision. Telegram publishes view counts on its public widget in short form — 8.12K, 3.7M — so any reading at or above 1,000 reaches us rounded to three significant figures, and only counts below 1,000 are exact. Averages and rates derived from them are shown to the same precision rather than to the unit: a figure like 3,701,250 would assert digits nobody measured.
Reaction counts are published per emoji and rounded the same way, so a total below 1,000 is exact and a larger one is a sum that may carry a rounded component from each emoji above 1,000. Because it is a sum, it does not look rounded — read a large reaction total as three significant figures per contributing emoji rather than as the figure it prints.
What this channel posts
- Photos
- ≈2,600
- Links
- ≈21
Lifetime counters from Telegram’s own channel header, read 27 September 2026 — not the date at the top of this page, which is when the subscriber count was last read. A count marked ≈ was rounded by Telegram before we ever saw it — t.me prints these counters in full below 1,000 and to three significant figures above, so ≈142,000 means somewhere between 141,500 and 142,499.
Telegram Stars
- Stars received
- 2
- across the posts below
- Posts paid on
- 1
- of 42 we hold a reading for · 2%
- Most on one post
- 2
- single highest reading
A paid reaction is a reader spending Telegram Stars — bought with money — on a post by @it_boooks. Telegram publishes the count on the public post preview alongside ordinary reactions, and this register reads it there. It is the only figure on this site that measures money moving rather than attention.
Stars are not reactions, and the two are never added. They are rendered in the same strip on Telegram and counted in the same shape, but one is a tap and the other is a purchase. The reaction totals and the engagement rate elsewhere on this page exclude every figure in this section, and no rate here is computed against a reaction count.
This is not revenue, and we publish no currency figure. What a Star costs a reader and what it pays a channel are different numbers, Telegram takes a share we cannot observe, and the terms have changed. Converting a Star count into money would be an estimate dressed as a measurement, so the count is where we stop.
Counted over the 42 most recent posts we hold for this entry, published 1 July 2026 to 25 September 2026. Star counts above 1,000 reach us in Telegram’s short form and carry the same three-significant-figure rounding as everything else on this page.
Advertising
- Ad load
- 2.38%
- 1 of 42 posts carry an ad marker
- Regulatory tokens
- 1
- posts carrying an erid · 1 distinct token
- Median views · ads
- 8,880
- over 1 measured post
- Median views · rest
- 10,200
- over 41 measured posts
An ad marker, not a judgement about a post. A post is counted here because it carries one of two explicit markings: an erid token, which Russian law has required on paid placements since 2022 and which is issued against a specific advertising contract, or a #реклама / #ad hashtag in the body, which is the channel declaring it itself. The first is documentary; the second is a self-declaration and is weaker. No classifier reads the text and decides — nothing on this site guesses that a post is an advertisement.
This is a floor, and it can only ever be a floor. A channel that runs paid placements without marking them produces no marker for us to count, and an unmarked ad is indistinguishable from an ordinary post on the public surface. The ad load above therefore means “the share of posts that declared themselves”, never “the share of posts that were paid for”. A low figure is not evidence of a channel that runs few ads.
Both figures are medians, and no ratio between them is published. Each is a view reading that actually occurred on a post, picked by percentile_disc rather than averaged, so one viral post cannot move it and no interpolated value is invented between two readings. The sample on one side is under five posts, which is too thin to compare. The two figures are shown side by side with the count behind each, and deliberately not divided into a headline like “ads get x% fewer views” — an arithmetic that is easy to print and, at this sample size, means nothing.
| erid | Posts | First seen | Last seen |
|---|---|---|---|
| 2VtzqvmTpdo | 1 | 8 July 2026 | 8 July 2026 |
A token repeated across several posts is one advertising contract placed more than once, which is what the identifier is for. The strings are reproduced exactly as they appeared in the post or in its click-through URL and are not validated against any registry — we record the marker a channel published, and whether it resolves to a real contract is a question for the register that issued it.
Measured over the 42 most recent posts we hold, published 1 July 2026 to 25 September 2026. Views are the latest single reading held for each post, and any reading at or above 1,000 is rounded by Telegram to three significant figures.
Recent posts
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#DeepLearning #TensorFlow #Keras #PyTorch 2026 Глубокое обучение с TensorFlow, Keras и PyTorch Автор: пер. с англ. И. Л. Люско Эта книга научит вас создавать современные модели глубокого обучения с помощью самых мощных и популярных фреймворков TensorFlow, Keras и PyTorch. Независимо от того, являетесь ли вы опытным специалистом в области машинного обучения или только начинаете свою карьеру, она снабдит вас инс…
#Unity 2025 Создание собственной метавселенной в Unity Автор: Надалес Д. Цель этой книги – провести читателя по захватывающему пути создания метавселенных и виртуальных миров, снабдив его навыками и знаниями, необходимыми для формирования собственных цифровых реальностей. В основе этой технологической одиссеи лежит платформа Unity, которая произвела революцию в реализации интерактивных взаимодействий человека и м…
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Showing the 12 most recent of 42 posts we hold for @it_boooks. View and reaction counts are the latest single reading for each post, not a live figure, and a recent post is still accumulating both. A view count marked ≈ was rounded by Telegram before we ever saw it — t.me prints views in full below 1,000 and to three significant figures above, so ≈1,200,000 means somewhere between 1,150,000 and 1,249,999. Unmarked counts are exact. Text is reproduced from the public post preview and truncated for length.
Posts edited after publishing
@it_boooks edited 1 post after it first published — the same permalink now carries different wording than the one this register originally read, caught because our own crawl held a copy of the earlier text.
An edit is not deception. Typo fixes, price updates and corrections look exactly like this too — this register can tell you the wording changed and when, not why. How this is measured.
- First edit seen
- 13 August 2026
- Most recent edit
- 13 August 2026
Mentions
Named by 3 registered channels — every channel on the register whose own posts have named this one, by its current username or any other username it currently holds, merged from two separately captured readings of the same fact so a namer caught by only one of them is not missed and a namer both caught is not counted twice. A username this channel has since dropped is not matched — that handle may belong to someone else now, and crediting today’s namer to yesterday’s owner would misattribute it.
Named by
Channels on the register whose posts name this channel's handle.
Names
Channels on the register whose handles appear in this channel's posts.
A mention is a weaker signal than a forward and is counted separately for that reason — naming a channel is not republishing it, and a handle in a post body is easy to place deliberately. The post counts beside each row below are distinct posts in which the handle appeared, from posts we have read on both sides — the “Named by N registered channels” figure above is a different count, of distinct NAMING CHANNELS rather than posts, and is not the sum of the rows under it.
Appears in Telegram’s recommendations for other channels
The reverse of the list above, and a different kind of signal. This does not require this channel to have ever been asked about directly — each row below is a channel we DID ask Telegram about, whose Telegram-generated list happened to include this one. A channel can appear here with an empty list above it, because being named by someone else’s query is independent of having been queried itself.
@developer_shelf · 26,815
Telegram ranks this channel #3 of 63 here — alongside 62 others — read 11 September 2026
@porscode_tg · 28,393
Telegram ranks this channel #9 of 77 here — alongside 76 others — read 9 September 2026
@hahacker_news · 25,571
Telegram ranks this channel #12 of 59 here — alongside 58 others — read 14 September 2026
@physics_lib · 146,712
Telegram ranks this channel #12 of 72 here — alongside 71 others — read 13 August 2026
@maths_lib · 25,423
Telegram ranks this channel #17 of 67 here — alongside 66 others — read 14 September 2026
@pythonbooks · 38,517
Telegram ranks this channel #18 of 65 here — alongside 64 others — read 17 September 2026
@databases_secrets · 30,002
Telegram ranks this channel #21 of 82 here — alongside 81 others — read 7 September 2026
@pythonist_ru · 24,046
Telegram ranks this channel #33 of 82 here — alongside 81 others — read 17 September 2026
@proglibrary · 78,288
Telegram ranks this channel #33 of 82 here — alongside 81 others — read 19 August 2026
@javalib · 30,666
Telegram ranks this channel #46 of 84 here — alongside 83 others — read 7 September 2026
@tbite · 28,050
Telegram ranks this channel #55 of 85 here — alongside 84 others — read 9 September 2026
@Python_per_month · 28,238
Telegram ranks this channel #74 of 86 here — alongside 85 others — read 9 September 2026
@sysadmin_library · 25,649
Telegram ranks this channel #81 of 85 here — alongside 84 others — read 13 September 2026
This channel appears in 13 seed channels' Telegram-generated recommendation lists in total. Each is Telegram’s list for THAT channel, not this one — see how this is measured.
Cite this entry
A live page changes as we take new readings, so a citation should name the measurement it is based on, not just the URL. The line below cites the subscriber count as measured 25 September 2026 — this entry's latest reading, not the date you are reading this.
“Программирование | книги” (@it_boooks), 47,460 subscribers as measured 25 September 2026. Telegram Register, tgregister.com/channel/it_boooks.
Full measurement history, CC BY 4.0. Every reading this register holds for this entry, not just the latest one, as a dated, downloadable record: CSV · JSON. Free to use with attribution to tgregister.com. Each file carries its own generation timestamp, which is the figure to cite for exactly when the data was retrieved.